2
02. Speed of boat is 4 times greater than speed of
flow of river and boat travels from A to B up
stream in 2 hrs. If distance between B to A has
to cover in 1 hr. 30 min. then find the percentage
increase or percentage decrease in speed of
boat?
Answers
Step-by-step explanation:
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Answer:20% increase.
Step-by-step explanation:
Upstream speed = x
Boat speed = 4x
Distance is same therefore Time inversely proportional to Speed.
hence,
Time = 2:3/2
Speed= 3:4
speed in first case = 4x-x =3x
speed in second case = (increased speed)-x=4x
Increased speed = 5x
% increase = 5x-4x/4x *100= 25%