Question

A car travels 10 km in 6 minutes. How long will it take to travel 15 km?​

Answer 1

Answer:

10/6=15/x

10x=90

x=9

right answer is 9 minutes

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Answer 2

Answer:

Time taken to cover 10 km = 6 min

Time taken to cover 1 km

$= \frac{6}{10}$

Now , time taken to cover 15 km

$= \frac{6}{10} \times 15 \\ = \frac{6}{2} \times 3 \\ = 3 \times 3 \\ = 9 \: mins$