In a car racing a car started at 8.00a m and after 30 min staying at destination, It returned back to the starting place. The destination is 27 miles from the starting point. the speed of the car 50 percent fast speed. at what time it returns to the starting point
A car cover 27 mile with 18 mph in =27/18= 1 hour 30 min. and it wait at starting point =30 min.
after this speed of return increase by 50% so 50%of 18 mph=9mph
Total speed of returnig=18+9=27
Then in return it take 27/27=1 hour
then total time in joureny=1+1:30+00:30 =3 hour
so it will come at 8+3 hour=11 a.m.
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