6. A bus covers a total distance of 740 km, out of which it covers 156 km at 52 km h, 146 km at
the speed of 36.5 km h- and it covers the remaining distance in 5 hours. Determine:
(a) speed of bus to covers remaining distance.
(b) average speed of bus for the whole journey.
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Answer:
t1=156/52=3hrs , t2=146/36.5=2hrs
a) 740-302=438
s3=438/5=87.6
b) average speed=740/(3+2+5)
=61.67
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