John started his journey on bike at 7.30 am at a speed of 8
km/hr. After 30m, Lewis started his journey from the same
place with the speed of 10 km/hr. At what time will Lewis
overtake John?
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Answer:
▶let the time from 8.00am to the catch-up time be t hrs.
distance covered by Lewis = 10t
distance covered by John = 8t+{ 1/2 } { 60 }
= 8t+30
2t=30
t = 15
15 min added to 8:00am would make it 8:15 am
Lewis went 10t = 10 { 15 }
t= 150 min
John went = 8t + 30
= 8 { 15 } + 30
= 120 + 30
= 150 min
Hope it's Help You :) ❇
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