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Question

A man usually rides his bike at a constant speed of 75 km/h. What distance will he cover, if he rides his bike for only 20 mins?

A
18 km
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B
30 km
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C
25 km
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D
20 km
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Solution

The correct option is C 25 km
Given,
Speed = 75 km/h
i.e., a distance of 75 km is covered in 60 mins.

We know,
Distance(x)Time(y)
x1y1 = x2y2

Given,
x1 = 75 km
y1 = 60 min
y2 = 20 cm
and x2=distance covered in 20 mins
x2 = x1×y2y1
y2 = 75×2060 = 25 km

Hence, he will cover 25 km in 20 mins.

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