Question

If 7 litres of petrol will last 23 minutes in Dave's car, then how long will 25 litres last? Give your answer to the closest minute.

Answer 1

25 liters will last 82 minutes.

Explanation:

All you have to do is divide 23 by 7 to get the minutes per liter.

This will get 3.285714285714286.

Next you multiply 3.285714285714286 by 25 and you get 82.14285714285714.

But since we need to round the answer by the closest minute the answer would be 82 minutes.

Hope this helped :D

Answer 2

ANSWER: 82 1/7 minutes

EXPLANATION: If seven liters last 23 minutes then one liter lasts 23/7 minutes. You multiply this fraction by 25 because you want 25x that and you end up with a mixed number of 82 1/7 minutes or 1h and 22 1/7 minutes