A man travel a distance of 200 km in 4 hours, partly by bus at a speed of 30km per hour and partly by car at a speed of 70 km/hr. Find the distance covered by him by bus.
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Hi✌️✌️
✍...
let dist travelled by foot = x km
then , dist travelled by bicycle = 60 - x km
time = dist / speed
speed on foot = 6 km/h
speed on bicycle = 12 km/h
time taken on foot = x/6 hr
time taken on bicycle = 60-x/12 hr
total time taken = 7 hr
total time = time on foot + time on bicycle
7 = x/6 + (60-x)/12
7 = (2x + 60-x)/12
7 = (60 + x)/12
7*12 = 60 + x
84 = 60 + x
x = 84-60 = 14 km ...
I hope it will help u ❣️❣️❣️
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