- Study Anytime, Anywhere through Our Mobile App & Web Portal
- 1000+ Video Lectures by CAT/XAT Topper Faculties
- 400+ Hours content of CAT Preparation Videos
- 9000+ Questions in Online CAT Coaching Course
- 200+ Topic Based Tests (50+ Basic, 50+ Moderate & 50+ Advanced Level)
- 20+ CAT Mocks (Pro CATs – Best Online Tests Series for CAT)
- 10+ Mock OMETs (Online Test Series for SNAP, NMAT, IIFT, XAT, TISS, CMAT)
- Online Doubt Solving on One – to – One basis
- GD-PI-WAT Online Preparation Material
Get access to the detailed solutions to the previous years questions asked in IIFT exam
Explanation:
Let us assume the upstream speed of the boat = u and the downstream speed = v
30/u+44/v=10
40/u+55/v=13
Consider 1/u=a, 1/v=b, these equations become
30a+44b=10
40a+55b=13
We get a=1/5 and b=1/11 Hence, 1/u=1/5 and 1/v =1/11 => u=5 and v=11
Assuming speed of boat in still water is x and the speed of stream=y
u=x-y=5
v=x+y=11
From these equations, we get x=8 km/hr