SOLUTION: 3.a man cycled for some time at 16km/h and returned at 15 km/h. the total time was taken was 31/4 hours. find the total distance he cycled?

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Question 388269: 3.a man cycled for some time at 16km/h and returned at 15 km/h. the total time was taken was 31/4 hours. find the total distance he cycled?
Answer by robertb(5830) About Me  (Show Source):
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Let d = distance cycled. Then d%2F16+%2B+d%2F15+=+31%2F4---->31d%2F240+=+31%2F4, or d = 60 kms. Total distance traveled is 2*60km = 120 km.