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boat moves upstream in 6 hrs and covers the same distance downstream in 5 hrs. then speed of a raft floating?
Dear Hemant
5=d/v+vr
6=d/v-vr
divide both
5/6= v-vr/v+vr
solving
vr=v/11
All the best.
AKASH GOYAL
AskiitiansExpert-IIT Delhi
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