Question

Usha covered a distance of 250 km partly by walking and partly by car at a speed of 35 km/hr and 55

km / hr respectively, If she covers 50 km by walking. Find How long will she take to cover the

distance covered by car?​

Answer 1

Answer:

5hours

STEP BY STEP Solution: Let the train cover x km at 40 kmph and (250-x) km at 60 kmph. Thus we have

x/40 + (250-x)/60 = 5, or

1.5x + 250 - x = 60*5 = 300, or

0.5x = 50, or

x =100.

So, the train covered 100 km at a speed of 40 kmph and 150 km at 60 kmph. Answer.

Check: (100/40)+(150/60) = 2.5+2.5 = 5 hours. Correct.

Answer 2

Answer:

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Step-by-step explanation: