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According to Question; Efficiency of pipe ‘A’ = (150/15) = 10 litres/hour Efficiency of pipe ‘C’ = 10 ÷ 1.25 = 8 litres/hour Efficiency of pipe ‘B’ = 8 × 1.5 = 12 litres/hour Time taken by all the pipes together to fill the tank = {150/(10 + 8 + 12)} = (150/30) = 5 hours Or, time taken by all three pipes together to fill the tank = 5 × 30 = 150 minutes
A sum of money lent at 5% rate of simple interest. The difference between interest for 6 years and 4 years is Rs. 2000. Find the principal amount.
A man invested Rs. 30,000 at simple interest of 'x%' p.a. and received Rs. 45,000 after 2 years. If he had invested Rs. 30,000 at simple interest of 'x%...
The simple interest at k% for k year will be Rs. k on a certain sum. Find the principal amount.
If the ratio of the sum invested and simple interest received after 1 year is 25:14 respectively, then find the rate of interest.
A principal amount is invested at an annual simple interest rate of R%, growing to Rs. 9,500 over 5 years and Rs. 13,100 over 9 years. Calculate the tot...
A sum of 74000 is divided into two parts such that the simple interest on the first part for 3 years at 15% per annum is equal to the simple interest on...
A sum is lent on compound interest for 2 years at 14% p.a. If the compound interest on the sum is Rs.5392.8, find the sum.
Mohit saves 20% of her monthly salary. And of the remaining Income he gives to his mother and sister its ¼ and half respectively and the remaining sala...
A man deposited Rs. 16000 at 10% compound interest, compounded annually while Rs. 14000 at 13% simple interest per annum. What will be the difference be...
A man wants to invest Rs. 60660 in bank accounts of his two sons whose ages are 12 years and 16 years in such a way that they will get equal amount at a...
