Mr. Ghosh Babu leaves his house daily at a particular time to go to his office.He reaches office 10 minutes late when he travels at 20kmph and 5 min early when he travels at 30kmph.At what speed should he travel to reach office on time?
Answers
Answered by
0
hiii answer is 24 km per hour
nidhi6555:
ans is 25.71 kmph. i need explanation for the answr
Answered by
4
Answer:25.71 km/hr
Explanation:Let us assume his usual speed is 20km/hr and new speed is 30 km/hr.
Ratio of speed is 2:3.
Ratio of time taken is 3:2 (inverse relation)
The difference in time is 15min.
Time taken at speed 20km/hr is 45 min. (10 min late)
He should take 35 min to reach office on time .
Speed required= 20*45/35.
If there is any part you dont get please post it.
Similar questions