-3
A train starts with a speed of 40 km/h with its speed increasing every hour by 10 km/h. In how many hours will it cover 185 km?
- A3 (1/8) h
- B3 (1/4) h
- C3 (1/2) h
- D3 (5/6) h
Correct answer: C
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0
CCommunity
3 (1/2) h
NA
NA
0
CCommunity
Ans =
He covers 40 km in 1 hr then its speed increasing every hour by 10km/hr. Means next 1 km speed is 50km then next hour 60km hence the distance covered 40+50+60 = 150 in first 3 hr 150 km distance covered and remaing 35 km covered in half hour.
Ans is 3 1/2 hr
He covers 40 km in 1 hr then its speed increasing every hour by 10km/hr. Means next 1 km speed is 50km then next hour 60km hence the distance covered 40+50+60 = 150 in first 3 hr 150 km distance covered and remaing 35 km covered in half hour.
Ans is 3 1/2 hr