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A car travels 281 km in the first hour and 163 km in the second hour. What is the average speed (in km/h) of the car for the whole journey?
Question

A car travels 281 km in the first hour and 163 km in the second hour. What is the average speed (in km/h) of the car for the whole journey?

A.

215

B.

222

C.

229

D.

223

Correct option is B

Given:

Distance in 1st hour = 281 km

Distance in 2nd hour = 163 km

Total time = 2 hours

Formula Used:

Average Speed = Total DistanceTotal Time\frac{\text{Total Distance}}{\text{Total Time}}​​

Solution:

Total Distance= 281 + 163 = 444 km

Total Time = 2 hours

Average Speed = 4442=222 km/h \frac{444}{2} = 222 \, \text{km/h}​​

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