A bus completes a journey of 420 km in 13/2 hours . The first three - fourth part of the journey was per formed at 63 km per hour . Calculate its speed gor the remaining journey .
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Total Distance=420 km
Time =13/2 hours
3/4 th of Distance=420×3/4
=315km
MEANS he complete 315 km in 63 km/h Speed
Time taken to complete 315 km
=Distance/speed
=315/63
=5 hours
Remaining Distance=420-315=105 km
Remaining Time=13/2-5
=3/2 hours
Speed =Distance/Time
=105÷3/2
=105×2/3
=35×2
=70 km/h
Total speed for remaining Distance=70 km/h
Time =13/2 hours
3/4 th of Distance=420×3/4
=315km
MEANS he complete 315 km in 63 km/h Speed
Time taken to complete 315 km
=Distance/speed
=315/63
=5 hours
Remaining Distance=420-315=105 km
Remaining Time=13/2-5
=3/2 hours
Speed =Distance/Time
=105÷3/2
=105×2/3
=35×2
=70 km/h
Total speed for remaining Distance=70 km/h
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