Question
Compound interest on a certain sum of money for 2 years
is Rs.3400 while the simple interest on the same sum for the same time period is Rs.3200. Find the rate of interest.Solution
SI for 1 year = 3200/2 = Rs.1600 Difference between CI and SI for 2 years = Rs.(3400 – 3200) = Rs.200 Required rate = (200/1600) x 100 = 12.5%
If a tank can be filled by a tap in 16 hours, but due to an outlet, it actually takes 4 hours longer to fill the tank, find the duration in which the ou...
Pipe ‘A’ and pipe ‘B’ can fill a cistern in 18 minutes and 16 minutes respectively. Pipe ‘C’ alone can empty the cistern in 12 minutes. If a...
A water tank can be filled in 20 minutes by an inlet and emptied in 30 minutes by an outlet. Calculate the time required to fill half of the tank with b...
Two pipes X and Y can fill a tank in 90 minutes and 60 minutes respectively. A third pipe Z can empty the tank in 2 hours 30 minutes. X is kept closed. ...
A cistern has two pipes one can fill it with water in 16 hours and other can empty it in 10 hours. In how many hours will the cistern be emptied if both...
Pipe A and B can fill the pool in 38 minutes and 19 minutes, respectively. Pipe C can empty half filled pool in 38 minutes. If all the pipes are opened ...
Pipe A alone fill the tank in x hours and Pipe B alone fill the tank in (x – 7) hours. If the efficiency of pipe B is double of pipe A and pipe A fill...
A translator ‘X’ and a translator ‘Y’ can translate a book in 12 hours and 18 hours, respectively. If both translators work together, then how m...
Pipe X can fill a tank in 15 hours and pipe Y in 30 hours. If both the pipes are opened in an empty tank, how much time will they take to fill it?
Pipes ‘A’ and ‘B’ can fill a tank in 6 hours and 9 hours, respectively. If pipe ‘C’ is opened along with pipes ‘A’ and ‘B’, then the...
Relevant for Exams:
