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Question

A man filled his car tank with 20 litres of diesel to travel exactly 480 km. At the end of the day, he finds 8 litres of diesel left in the tank. How much distance did he cover?


A
258 km
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B
210 km
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C
250 km
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D
288 km
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Solution

The correct option is D 288 km
Given,
20 litres of diesel is required to cover 480 km.

At the end of the day, 8 litres of diesel is left.
So, litres of diesel consumed
= (20 - 8) = 12 litres

We know that, if, the number of litres of diesel consumed increases, then the distance covered also increases.

So, Litres of diesel(x)Distance(y)
 x1y1 = x2y2

Given,
x1 = 20 l
y1 = 480 km
x2 = 12 l
and y2 = distance covered
 y2 = x2 × y1x1
 y2 = 12 × 48020 = 288 km 

Mathematics

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