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.
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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
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