Question

Mohit covers 30 miles in 6 hours in down stream and returns the same distance in 10 hours in upstream by his boat. Calculate the speed of Mohit's boat in still water and the speed of the steam.​

Answer 1

Answer:

down stream speed =7.4km/hr ,up stream =4.5km/hr and speed of the stream = 2.9 km/hr

Step-by-step explanation:

speed of in down stream(s) = distance /time

one mile = 1.5 km (approximately)

so 30 miles = 45 km

given

time taken downstream = t1=6 HR

time taken upstream =t2=10 HR

substituting values

s1=45km/6hr

s1=7.4km/hr

S2=45km/10 hr

S2=4.5km/hr

and

speed of stream = speed during down stream - speed during up stream

i.e speed of stream = 7.4km/hr -4.5km/hr

= 2.9km/hr