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Trip 1-:\nA boat goes upstream 30 km and downstream 44 km. The total time for this journey is 10hours.\nTrip 2-:\nThe same boat also goes upstream 40 km and downstream 55 km . The total time for this trip is 13 hours.\nFind the speed of stream and boat.\nAnswer-3 and 8 km/hr\nplease give the solution

Shrey , 10 Years ago
Grade 11
anser 3 Answers
Bhuvaneswari Singh

Last Activity: 10 Years ago

hi the equation is 30/x+y + 44/x+y = 10 similar for d next check rd sharma fr full solution.

Sunil Kumar FP

Last Activity: 10 Years ago

let the speed of the boat be v and the speed of the stream be s

according to the problem
44/v+s + 30/v-s =10
55/v+s + 40/v-s =13
let v+s=x v-s=y
44/x +30/y =10
55/x + 40/y =13
solving for x and y we get
x=11
y=5
now x=v+s
y=v-s
again solving v=8 a=3

thanks and regards
sunil kr
askIItian faculty

Sunil Raikwar

Last Activity: 10 Years ago

Dear Student, There is a technical issue so please re-post the question again separately. askIITian Faculty

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