Question

A boat covers a distance of 24 kms in 10 hours downstream. To cover the same distance upstream, the boat takes two hours longer. What is the speed of the boat in still waters?
A. 2 km/hr
B. 2.8 km/hr
C. 4 km/hr
D. None of these​

Answer 1

Answer:so we know speed is distance/time

so distance is 24 kms

time is 10 plus2 we get 12

so 24/12

tht is 2km/hr

Answer 2

Answer:

ds=24/10=2.4

us=24/12=2

boat speed =1/2(2.4+2)=2.2km/hr