Question
Daksh bought 21 notebooks for Rs.1260 from shop A and 14
notebooks for Rs.1190 from shop B. What is the average price he paid per book?Solution
Total money paid for 35 notebooks = Rs. (1260 + 1190) = Rs. 2450Β Β β΄ Average price paid per notebook = Rs. (2450/35) = Rs.70
Pipe βAβ can fill a tank in 20 hours while pipe βBβ takes 25 hours to empty it. Pipe βAβ is opened alone when the tank was empty and after 1...
- Pipe 'A' is 5 times as efficient as pipe 'B'. Pipe 'C', which is one-fifth as efficient as pipe 'B', can fill a tank alone in 25 hours. Find difference bet...
Pipe 'A' alone takes 30 minutes to fill half of the tank. Pipe 'B' is twice as efficient as pipe 'A'. Find the percentage of the tank filled by both in...
A printing machine βPβ and a printing machine βQβ can print a set of documents in 14 hours and 21 hours, respectively. If both machines work tog...
- Pipe D can fill a pool in 6 hours and pipe E in 12 hours. If both the pipes are opened in an empty pool, how much time will they take to fill it?
Tap A can fill a tank in 20 hours and tap B can emptied it is 25 hours. Tap A starts filling and they opened for 1 hour each alternatively in what time...
Pipe βAβ takes 10 minutes to fill a tank. Pipe βBβ takes 20 minutes to empty the same tank. If pipe βBβ is opened 5 minutes after pipe βAοΏ½...
Pipe A and Pipe B together can fill the tank in 20 hours. The capacity of the pipe A is 40% of the capacity of the pipe B. How much time will pipe B alo...
Pipe A and Pipe B together can fill the tank in 15 hours. The capacity of the pipe A is 20% of the capacity of the pipe B. How much time will pipe B alo...
A tank is filled by two pipes A and B in 12 minutes and 15 minutes, respectively. Another pipe C can empty the tank in 10 minutes. If all three pipes ar...
