Question
If two successive discounts of 20% and 12% are applied,
what would be the equivalent single discount?Solution
Let the marked price of the article be Rs. 100a. Selling price after 1st discount = 100a X 0.8 = Rs. 80a Selling price after 2nd discount = 80a X 0.88 = Rs. 70.4a Therefore, required percentage = {(100a - 70.4a) /100a} X 100 = 29.6%
A tank has two inlet pipes A and B and an outlet pipe C. Pipe A can fill the tank in 6 hours, and Pipe B can fill it in 8 hours. Pipe C can empty the fu...
Pipes P, Q, and R can fill a tank in 15 hours, 10 hours, and 30 hours respectively. If the efficiencies of pipes P and Q are each reduced by 40% of thei...
Two pipes M and N can fill a tank in 16 hours and 24 hours respectively. The pipes were opened together, but pipe N stopped working after sometime and t...
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...
Two pipes A and B can fill a tank in 4 hours and 7 hours respectively & a waste pipe C can empty in 8 hours. If pipes A , B & C are opened at 7a...
Pipe ‘M’ and pipe ‘N’ can fill a tank alone in 20 hours and 40 hours, respectively. If both pipes are opened together and pipe ‘M’ is close...
- Pipe A alone and pipe C alone can fill the empty tank in 50% less time and 25% less time respectively than the time taken by pipe B to empty the full tank....
Pipes P and Q can fill a tank in 90 minutes and 60 minutes respectively. Another pipe R can drain the tank in 2 hours 30 minutes. Q and R are opened tog...
Pipe ‘A’ and pipe ‘B’ can fill a cistern in 20 minutes and 12 minutes respectively. Pipe ‘C’ alone can empty the cistern in 10 minutes. If a...
Pipe ‘A’ and pipe ‘B’ can fill a cistern in 10 minutes and 12 minutes respectively. Pipe ‘C’ alone can empty the cistern in 12 minutes. If a...