Question

A boat moves upstream at the rate of 1 km in 20 minutes and down stream 1 km 12

Answer 1

Speed of the current = 1 km/hr

Explanation:

Given: A boat moves upstream at the rate of 1 km in 20 minutes and down stream 1 km in 12 minutes.

Find: Speed of the current.

Solution:

Speed upstream = 1 km in 20 minutes.

So the upstream speed in km per hour = (1 / 20) * 60 = 3 km/hr

Speed downstream = 1 km in 12 m

So the downstream speed in km per hour = (1 / 12 )* 60 = 5 km/hr

Therefore speed of the current = (5 - 3)/2 km/hr = 1 km/hr

Answer 2

Answer:

a boat moves upstream at rate of 1km in 25 minutes and downstream 1km in 12 minutes. the speed of the current is?