Find the difference between the total B-type ore extracted by Company X in 2017 and 2019, and the sum of A-type ore extracted by Company X in 2016 and Company Y in 2018.

Question

Question

The bar graph shows the total (type A and type B) quantity (in kg) of ore extraction by two different companies (X and Y) in four different years.

The table shows the percentage of A type ore extraction by company X and the quantity (in kg) of B type ore extraction by company Y in these years.

Years	Percentage of A type ore extraction by company X	Quantity (in kg) of B type ore extraction by company Y
2016	40%	30
2017	50%	135
2018	60%	75
2019	75%	90

This question was previously asked in

RRB PO Mains Memory Based Paper (Held On: 29 September 2024 Shift 1)

Answer 1

Common Calculation

In 2016 Ore extraction by X = 150 kg

A type ore extraction by X = 150 × [40 /100] = 60 kg

B type ore extraction by X = 150 – 60 = 90 kg

Ore extraction by Y = 90 kg

A type ore extraction by Y = 90 - 30 = 60 kg

B type ore extraction by Y = 30 kg

Similarly, we can calculate the others data also.

Years	Quantity (in Kg) of A type ore extraction by company X	Quantity (in Kg) of A type ore extraction by company X	Quantity (in kg) of B type ore extraction by company Y	Quantity (in Kg) of A type ore extraction by company Y
2016	60	90	30	60
2017	90	90	135	75
2018	210	140	75	45
2019	180	60	90	70

Calculation

B-type ore by Company X in 2017 and 2019:

=90 + 60 = 150

A-type ore by Company X in 2016 = 60
A-type ore by Company Y in 2018 = 45

Sum = 60 + 45 = 105

Difference = 150 - 105 = 45