d = 45 + 20 = 65 km.
t = 3 + 1.5 + 1.5 = 6.0 Hours.
V = d/t = 65km/6h = 10.83 km/h.
Ali rode a bicycle from town A to town C through town B as follows.He rode from A to B a distance of 45 km in 3 hours and then rested for 1hr and 1/2 hr.From B he rode to C a distance of 20 km in 1hr and 1/2 hr. Find the average speed riding
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