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Question

Alvaro takes 1 hour to cover a distance of 3 km while riding a bicycle. If he rides at the same speed, in how many hours will he cover a distance of 21 km?

A
6 hours
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B
5 hours
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C
7 hours
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D
8 hours
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Solution

The correct option is C 7 hours
Alvaro takes 1 hour to cover 3 km.

So, if he rides the bicycle at the same speed and covers 21 km, which is 7 times the previous distance (21 = 3 × 7), he will take 7 times the previous time.

In other words, the time taken by Alvaro to cover 21 kms is given by
213 hours=7 hours.

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