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According to Question; Efficiency of pipe ‘A’ = (120/24) = 5 litres/hour Efficiency of pipe ‘C’ = 5 ÷ 1.25 = 4 litres/hour Efficiency of pipe ‘B’ = 4 × 1.5 = 6 litres/hour Time taken by all the pipes together to fill the tank = {120/(5 + 4 + 6)} = (120/15) = 8 hours Or, time taken by all three pipes together to fill the tank = 8 × 15 = 120 minutes
Five years ago from now, the ages of 'A' and 'B' were in the ratio 31:17, respectively. Fifteen years ago from now, the ages of 'A' and 'B' were in the ...
When 15 years ago age of Dev was divided by 20, the present age of his granddaughter Swati is obtained. If Swati is 6 years younger than her sister Neha...
The ages of A, B and C together are 60 years. B is thrice as old as A and C is 5 years older than A. What is the difference between ages of B and C?
The average of present ages of 'Anna', 'Bob', and 'Charlie' is 20 years. Three years ago, the average of ages of 'Bob', 'Charlie', and 'David' was 15 ye...
Shalini is younger than Rashi by 3 years. If the ratio of Shalini and Rashi ages is 4:5 respectively, then find the age of Shalini.
In an office, there are 18 employees. The average age of all the employees is 28 years. If the age of three senior managers is included, then the averag...
P's present age is 30% less than what her husband's age will be 8 years from now. If 3 years ago, the sum of their ages was 37 ye...
