English
Hindi

Question

Download Solution PDF

A girl goes to school at a speed of 10 km/hr. She comes back with a speed of 40 km/hr. Find her average speed for the whole journey.

This question was previously asked in
RPF Constable 2024 Official Paper (Held On 05 Mar, 2025 Shift 1)
Download PDF Attempt in App
View all RPF Constable Papers >
  1. 10 km/h
  2. 14 km/h
  3. 16 km/h
  4. 6 km/h

Answer (Detailed Solution Below)

Option 3 : 16 km/h
Free Tests
View all Free tests >
Free
RPF Constable Full Test 1
120 Qs. 120 Marks 90 Mins
Start Now

Detailed Solution

Download Solution PDF

Given:

Speed while going to school (S1) = 10 km/h

Speed while coming back (S2) = 40 km/h

Formula used:

Average Speed =

Calculation:

Average Speed =

⇒ Average Speed =

⇒ Average Speed =

⇒ Average Speed = 16 km/h

∴ The correct answer is option (3).

Download Solution PDF
Latest RPF Constable Updates

Last updated on Jul 16, 2025

-> More than 60.65 lakh valid applications have been received for RPF Recruitment 2024 across both Sub-Inspector and Constable posts.

-> Out of these, around 15.35 lakh applications are for CEN RPF 01/2024 (SI) and nearly 45.30 lakh for CEN RPF 02/2024 (Constable).

 

-> The Examination was held from 2nd March to 18th March 2025. Check the RPF Exam Analysis Live Updates Here.

‹‹ Previous Ques
Next Ques ››
Exams Tests Super Practice

More Average Speed Questions

Q1.In a race, an athlete covers a distance of 312 m in 104 sec in the first lap. He covers the second lap of the same length in 52 sec. What is the average speed (in m/sec) of the athlete?
Q2.A person covers \(\frac{1}{3}\) part of a certain distance at a speed of 4 km/h, \(\frac{1}{4}\) part of that distance at a speed of 9 km/h and the remaining distance at a speed of 5 km/h. Find the average gait of the person.
Q3.What is the average speed of a car which covers half the distance with a speed of 28 km/h and the other half with a speed of 84 km/h?
Q4.A girl goes to school at a speed of 6 km/hr. She comes back with a speed of 18 km/hr. Find her average speed for the whole journey.
Q5.In a race, an athlete covers a distance of 372 m in 186 sec in the first lap. He covers the second lap of the same length in 62 sec. What is the average speed (in m/sec) of the athlete? 
Q6.In a race, an athlete covers a distance of 366 m in 61 sec in the first lap. He covers the second lap of the same length in 183 sec. What is the average speed (in m/sec) of the athlete?
Q7.In a journey of 240 km, a bus covers a distance of 150 km at the speed of 75 km/h, the next 60 km distance at the speed of 100 km/h and the remaining distance at the speed of 75 km/h. The average speed (in km/h) of the bus for the whole journey is:
Q8.The speed of a train, excluding stoppages, is 108 km per hour. Including stoppages, the speed is 90 km per hour. For how many minutes does the train stop per hour?
Q9.Rachin travels a distance at 60 km/hr for 2 hours and 80 km at 40 km/hr. Find the average speed of Rachin (in km/hr).
Q10.A man goes to Ahmedabad from Kolkata at a speed of 9 km/hr and returns to Kolkata at speed of 18 km/hr, through same route. What is his average speed (in km/hr) of the entire journey?

More Speed Time and Distance Questions

Q1.Train A of length 80m while moving crosses a pole in 16 seconds. lf it is known that the lengths of train B and train A is in the ratio of 3:1, then how long would it take train B to cross a platform which is half the length of train A if the speed of train B is same as that of train A?
Q2.A boat can covers a certain distance in upstream and same distance in downstream in total of 7 hours 48 minutes, If upstream speed of the boat is 62.5%. of downstream speed of the boat and speed of the stream is 3 km/h, what is the total distance covered by the boat?
Q3.Downstream speed of a boat is 16 km /hr. Speed of stream is 40% less than the speed of boat. Find the speed of boat?
Q4.Ratio of speed of boat in still water and speed of stream is 7:2. Boat cover 120 km upstream in 8 hours and x km in 3 hours downstream. Find the value of x?  
Q5.Speed of boat to that of speed of stream is 7 : 2. If the boat covers certain distance downstream in 1 hour then find the time(in minutes) taken by boat to cover the same distance in upstream.
Q6.A train travels from Delhi to Jamnagar at a speed of 80 km/hr and returns at a speed of 82 km/hr. If it takes 162 hours for the total travel, then find the distance between Delhi and Jamnagar. (In km) 
Q7.A boat goes 270 km upstream in 54 hours and a distance of 448 km downstream in 64 hours. Find the speed of the boat in still water. (In kmph) 
Q8.A train traveling at 136 km/h completely crosses another train having half its length and traveling in the opposite direction at 44 km/h in 6 s. If it also passes a railway platform in 45 s, then 1 find the length of the platform. (In m)
Q9.A person cycles from hostel to college at a speed of 20 kmph and reaches 13.5 minutes late. If he cycles at a speed of 24 kmph and reaches early by 13.5 minutes, find the distance between hostel and college. (in km)
Q10.The speed of a stream is 8 km/h. A boat can go 19 km downstream and 9 km upstream in 4 hours. What is the speed (in km/h) of the boat in still water?
Suggested Test Series
View All >
Reasoning for All Railway Exams Previous Year Paper Mock Test
753 Total Tests with 1 Free Tests
Start Free Test
RPF Constable Mock Test Series 2024
1197 Total Tests with   3 Free Tests
Start Free Test

More Quantitative Aptitude Questions

Q1.Perimeter of a rectangular field is equal to the perimeter of a triangular field whose sides are in the ratio 3:2:4 respectively. lf area of rectangular field is 500 m2 and sides are in the ratio 5:4 respectively, then calculate the longer side of the triangular field.
Q2.A cistern has an inlet pipe and an outlet pipe. Inlet pipe can fill three-fourth of the cistern in 24 minutes while outlet pipe can empty the one-third filled cistern in 16 minutes. If both the pipes are opened together, then the cistern will be completely filled in-
Q3.In a family, three sons were born for every 3 years one after the other. If the ratio of present ages of father and the eldest son is 15:7 and the average of the present ages of the 3 sons is 18 years. What will be the ratio of the ages of the father and the youngest son after 5 years?
Q4.Train A of length 80m while moving crosses a pole in 16 seconds. lf it is known that the lengths of train B and train A is in the ratio of 3:1, then how long would it take train B to cross a platform which is half the length of train A if the speed of train B is same as that of train A?
Q5.Can A and Can B contain a mixture of soda and water in the ratio of 5 : 3 and 7 : 2 respectively If soda and water are taken out in the ratio of P : Q from can A and B respectively to form a new mixture in which the ratio of soda and water is 12 : 5 respectively, then find the value Of P:Q?
Q6.A boat can covers a certain distance in upstream and same distance in downstream in total of 7 hours 48 minutes, If upstream speed of the boat is 62.5%. of downstream speed of the boat and speed of the stream is 3 km/h, what is the total distance covered by the boat?
Q7.M and R went for shopping and bought two sarees each at different cost. Cost price of saree bought by R is Rs.250 more than the cost price of saree bought by M. Shopkeeper earned a profit of 20% on selling both the sarees together to R and M which he bought them at total Rs.6000. At what cost did M buy saree?
Q8.There are three numbers m, n, and p, such that sum of m and n is 144, sum of thrice of n and five times of p is 464, and sum of p and m is 160, then what is the value of p?
Q9.While calculating average marks of 60 students, the two digits of original marks of a student are written reversed and thereby average of marks is increased by 0.6 Find the difference between the two digits of marks of the student?  
Q10.Simple interest received on a certain sum at a rate of simple interest of 5% for 2 years is Rs.780. If the rate of interest remains same, what will be the total amount at the time of withdrawal at the end of 5 years.  
Testbook Edu Solutions Pvt. Ltd.
1st & 2nd Floor, Zion Building,
Plot No. 273, Sector 10, Kharghar,
Navi Mumbai - 410210
support@testbook.com
Toll Free:1800 833 0800
Office Hours: 10 AM to 7 PM (all 7 days)
Company
About usCareers We are hiringTeach Online on TestbookPartnersMediaSitemap
Products
Test SeriesTestbook PassOnline CoursesOnline VideosPracticeBlogRefer & EarnBooks
Copyright © 2014-2022 Testbook Edu Solutions Pvt. Ltd.: All rights reserved
User PolicyTermsPrivacy
Hot Links： teen patti party lucky teen patti teen patti yes