A motorist traveled 190 km in 5 hours. His average speed for first 100 kilometres was 50 km/h. What was his average speed for the second 90 kilometres?

15 km/h

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20 km/h

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40 km/h

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30 km/h

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Solution

The correct option is D
30 km/h

Given:

Total distance travelled = 190 km

Total time taken = 5 hours

Time taken to cover the first 100 km = $\frac{100}{50}$ = 2 hours

So, the next 90 km will be covered in 3 hours

Hence, the average speed for the next 90 km = $\frac{90}{3}$ = 30 km/h

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A motorist traveled 190 km in 5 hours. His average speed for first 100 kilometres was 50 km/h. What was his average speed for the second 90 kilometres?

The correct option is D 30 km/h Given: Total distance travelled = 190 km Total time taken = 5 hours Time taken to cover the first 100 km = 10050 = 2 hours So, the next 90 km will be covered in 3 hours Hence, the average speed for the next 90 km = 903 = 30 km/h

The correct option is D
30 km/h

Given:

Total distance travelled = 190 km

Total time taken = 5 hours

Time taken to cover the first 100 km = $\frac{100}{50}$ = 2 hours

So, the next 90 km will be covered in 3 hours

Hence, the average speed for the next 90 km = $\frac{90}{3}$ = 30 km/h