Question

In 1 hour, A boat goes 13 km/h in the direction of stream and 7 km/h against the direction of stream. What will be the speed of boat in still water ?

Kindly solve it with full process.​

Answer 1

Answer: 10 km/h

Step-by-step explanation:

let velocity of boat in still water = Vmr

velocity of boat = Vm

velocity of river = Vr

therefore,

velocity of boat upstream = Vm + Vr = 13

velocity of boat downstream = Vm - Vr = 7

adding the eqns :

Vm + Vr +Vm - Vr = 13 + 7

2Vm = 20

Vm = 10kmph