MATHEMATICS

JAMB 2016 - Question 37

Mathematics 2016 JAMB Past Questions - Question 37: If a car travels 120km on 45 litres of petrol ,how much petrol is needed for a journey of 600km?

If a car travels 120km on 45 litres of petrol ,how much petrol is needed for a journey of 600km?
A:
B:
C:
D:
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Correct Answer

C

Explanation

car uses 45L for 120kmCar uses x L for 600kmBy apperance multiplication, 45L x 600km = x120kmtherefore x = 45 x 600 / 120kmtherefore x = 45 x 600 /120= 225LittersTo find out how much petrol is needed for a journey of 600 km, we can use the given information to calculate the petrol consumption rate and then apply it to the new distance.The car travels 120 km on 45 litres of petrol. To find the petrol consumption rate, we divide the distance by the petrol used: Petrol consumption rate = 120 km / 45 litres = 2.67 km/lNow, to find out how much petrol is needed for a journey of 600 km, we divide the distance by the petrol consumption rate:Petrol needed = 600 km / 2.67 km/l ≈ 224.72 litresTherefore, approximately 224.72 litres of petrol is needed for a journey of 600 km.

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