Question

A man complete his trip of 136 km in 8 hours. Some parts of the trip was covered at 15 km/he and the emailing at 18 km/hr. Find the part of the trip covered at 18km/hr

Answer 1

Since time= distance/speed
time travelled in 15km/h= x/15
time travelled in 18km/hr= 136-x/18
t(1)+t(2)= Total time
x/15+136-x/18=8
x+680/90=8
x+680=720
x= 40Km
136-x= 96 km
Therefore he travelled 96 km travelling at 18km/h
Hope this helps you
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