A man crosses a river in a boat. If he cross the river in minimum time he takes 10 minutes with a drift 120 m. if he crosses the river taking shortest path. He takes 12.5 minute find: -
(a) width of the river
(b) velocity of the boat with respect to water
(c) speed of the current

Question

A man crosses a river in a boat. If he cross the river in minimum time he takes 10 minutes with a drift 120 m. if he crosses the river taking shortest path. He takes 12.5 minute find: -
(a) width of the river 
(b) velocity of the boat with respect to water 
(c) speed of the current

anonymous · Answer

hey x=vrt,120=10vr
artef that 12.5=w/vb and by phyto u will gt
vbr=20m/min
vr=12m/min
w=200m

maheshmeghwal9 · Answer

would u make me understand step by step plz ?

maheshmeghwal9 · Answer

@mathslover @ajprincess Please help:)

mathslover · Answer

what a gr8 explanation : http://www.meritnation.com/discuss/question/2525429 u will find it very useful @maheshmeghwal9

maheshmeghwal9 · Answer

thanx a lot:)

mathslover · Answer

ur welcome :) ..Did it help u ?

maheshmeghwal9 · Answer

yeah:D

mathslover · Answer

:D gr8 to know ..