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Q.

A car takes 10 h to reach a destination by travelling at the speed of 65 km/h. How long will it take when the car travels at the speed of 50 km/h?

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a

13 hours

b

14 hours

c

12 hours

d

15 hours

answer is A.

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Detailed Solution

Given that a car takes 10 h to reach a destination by travelling at the speed of 65 km/h.
We need to find that how long will it take when the car travels at the speed of 50 km/h.
Assume that time taken to cover the given distance at speed of 50 km/h is t hours.
Equate the multiplication of 10 hours and 65 km/h with time taken t and speed 50 km/h and solve for t.

50 \times t = 65 \times 10

\Rightarrow t = \frac{65 \times 10}{50}

\Rightarrow t = \frac{65}{5}

\Rightarrow t = 13

The time taken is 13 hours.
Hence, the correct option is 1.

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A car takes 10 h to reach a destination by travelling at the speed of 65 km/h. How long will it take when the car travels at the speed of 50 km/h?