ICSE Class 7 Answered
A woman go s uphill with an average speed of 25 km/h and downhill with an average speed of 35 km/h. Find the average speed of the total journey
Asked by shrivastavapreyansh | 04 Dec, 2019, 07:28: AM
Expert Answer
Speed of the woman while going up is S1 = 25km/h
Speed of the woman while going down is S2 = 35 km/h
Average speed = 2S1S2/(S1+S2)
= 2 x 25 x 35 /(25+35)
= 1750/60
= 175/6 km/h
Answered by Renu Varma | 04 Dec, 2019, 11:06: AM
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