Interval MCQ Quiz - Objective Question with Answer for Interval - Download Free PDF
Last updated on Apr 7, 2025
Latest Interval MCQ Objective Questions
Interval Question 1:
The sum of the ages of 6 children born at the interval of two years each is 90 years. What is the age (in years) of the eldest child?
Answer (Detailed Solution Below)
Interval Question 1 Detailed Solution
Given:
The sum of the ages of 6 children born at the interval of two years each = 90 years.
Formula Used:
Let the age of the youngest child be x years.
Then the ages of the children are x, (x+2), (x+4), (x+6), (x+8), and (x+10) years.
Sum of ages = x + (x+2) + (x+4) + (x+6) + (x+8) + (x+10) = 90
Calculation:
x + (x+2) + (x+4) + (x+6) + (x+8) + (x+10) = 90
⇒ x + x + 2 + x + 4 + x + 6 + x + 8 + x + 10 = 90
⇒ 6x + 30 = 90
⇒ 6x = 90 - 30
⇒ 6x = 60
⇒ x = 60 / 6
⇒ x = 10
So, the age of the eldest child = x + 10 = 10 + 10 = 20 years.
The correct answer is option 2.
Top Interval MCQ Objective Questions
Interval Question 2:
The sum of the ages of 6 children born at the interval of two years each is 90 years. What is the age (in years) of the eldest child?
Answer (Detailed Solution Below)
Interval Question 2 Detailed Solution
Given:
The sum of the ages of 6 children born at the interval of two years each = 90 years.
Formula Used:
Let the age of the youngest child be x years.
Then the ages of the children are x, (x+2), (x+4), (x+6), (x+8), and (x+10) years.
Sum of ages = x + (x+2) + (x+4) + (x+6) + (x+8) + (x+10) = 90
Calculation:
x + (x+2) + (x+4) + (x+6) + (x+8) + (x+10) = 90
⇒ x + x + 2 + x + 4 + x + 6 + x + 8 + x + 10 = 90
⇒ 6x + 30 = 90
⇒ 6x = 90 - 30
⇒ 6x = 60
⇒ x = 60 / 6
⇒ x = 10
So, the age of the eldest child = x + 10 = 10 + 10 = 20 years.
The correct answer is option 2.