Calculate the speed of a car if it covers a distance of 200 km in 120 min-A- 100 km - hrB- 27-8 m - sC- 100 m - sD- 125 km - hr

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Properties of Measures of Central Tendency

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Question

Calculate the speed of a car if it covers a distance of 200 km in 120 min.

100 km/hr

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27.8 m/s

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100 m/s

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125 km/hr

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Solution

The correct options are
A
100 km/hr

B
27.8 m/s

We know that, 1 hr = 60 min i.e. 120 min = 2 hrs. distance = 200 km = 200000 m

120 min = 120 $\times$ 60 = 7200 s

Using speed = $\frac{d i s t a n c e}{t i m e}$ = $\frac{200}{2}$ = 100 km/hr (Answer)

or

Speed = $\frac{200000}{7200}$ = 27.8 m/s (Answer)

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Calculate the speed of a car if it covers a distance of 200 km in 120 min.

The correct options are A 100 km/hr B 27.8 m/s We know that, 1 hr = 60 min i.e. 120 min = 2 hrs. distance = 200 km = 200000 m 120 min = 120 × 60 = 7200 s Using speed = distancetime = 2002 = 100 km/hr (Answer) or Speed = 2000007200 = 27.8 m/s (Answer)