Question
The selling price of 5 bags is equal to the cost price
of 8 bags. Find the percentage of profit earned on selling a bag.Solution
ATQ, Let the cost price of a bag = Rs. 'A' Then, cost price of 8 bags = A × 8 = Rs. '8A' So, selling price of a bag = (8A/5) = '1.6A' So, percentage of profit earned on selling a bag = {(1.6A - A) ÷ A} * 100 = 60% Alternate Solution 5SP = 8CP Therefore, (SP/CP) = (8/5) Required profit percentage = {(8 - 5)/5} × 100 = 60%
A man can row 6 km/hr in still water. It takes him twice as long to row up as to row down the river. Find the rate of the stream.
A boy can swim in water with a speed of 16 km/hr in still water. If the speed of the stream is 9 km/hr, what will be the time taken by the boy to cover ...
The speed of a boat in still water is three times the speed of the boat upstream. If the boat takes 30 minutes to cover 27 km downstream, then find the ...
A boat covers a distance of 96 km downstream in 4 hours and returns upstream in 6 hours. Find the speed of the stream.
- A boat moves at a speed of 11 km/hr in still water, while the current speed is 5 km/hr. If it takes a total of 20 hours to go ‘x’ km both upstream and ...
The speed of the boat and the speed of the stream is 15km/hr and 3km/hr individually. The boat travel for a period of 3 hours upstream and 4 hours downs...
A motorboat completes 36 km upstream and 96 km downstream together in 7 hours. If its speed in still water is 12 km/h more than the stream, determine th...
A man can row 5 km/hr in still water. If the speed of the current is 2 km/hr, it takes 4 hours more in upstream than in the downstream for the same dist...
A boat goes 450 km downstream in 25 hours, and 200 km upstream in 20 hours. The speed of the stream is
The speed of a boat in still water is 30 km/hr. If the boat covers 180 km in upstream in 12 hours, then find the time taken by the boat to travel 180 km...
Relevant for Exams:
