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Question
Car A travels x km for every litre of petrol, while car B travels (x + 5) km for every litre of petrol.
Write down the number of litres of petrol used by car A and car B in covering a distance of 400 km.
Solution
Given Distance = 400 km
Car A travels x km/litre.
Car B travels (x + 5) km/litre.
No, of litre used by car
A = `"Distance"/"Speed of car A"`
= `(400)/x"litre"`.
No. of litre used by car B = `"Distance"/"Speed of car B"`
= `(400)/(x + 5)"liter"`.
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