A bike starts with a speed of 60 km/hr at 8a.m. Due to the problem in engine it reduces its speed as 20km/hr for every 1 hour. After 9 am, the time taken to covers 15 km is:

A bike starts with a speed of 60 km/hr at 8a.m. Due to the problem in

1.	A bike starts with a speed of 60 km/hr at 8a.m. Due to the problem in engine it reduces its speed as 20km/hr for every 1 hour. After 9 am, the time taken to covers 15 km is:
A.	22 minutes and 30 seconds
B.	23 minutes and 30 seconds
C.	24 minutes and 30 seconds
D.	25 minutes and 30 seconds
E.
Answer» B. 23 minutes and 30 seconds

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A bike starts with a speed of 60 km/hr at 8a.m. Due to the problem in engine it reduces its speed as 20km/hr for every 1 hour. After 9 am, the time taken to covers 15 km is:

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