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Total capacity = 120 units (LCM of 10, 12 and 8) Efficiency of pipe M = 120/10 = 12 units/hr Efficiency of pipe N = 120/12 = 10 units/hr Efficiency of pipe P = 120/-8 = -15 units/hr Capacity of tank filled by pipe M in 5 hours = 12 × 5 = 60 units Capacity of tank emptied by pipe P in 2 hours = -15 × 2 = -30 units Capacity of tank left for pipe N = 120 – 60 – (-30) = 90 units Time taken by pipe N to fill the remaining tank = 90/10 = 9 hrs Total time taken = 5 + 2 + 9 = 16 hrs
A factory manufactures two types of widgets, A and B, in the ratio of 4:5. If the production of widget A rises by 20% while the production of widget B d...
In a class, the ratio of number of boys to that of girls was 7:6 and total number of boys was 1960. When some more boys joined, the ratio became 8:7. Fi...
The ratio of the number of cats and dogs in a pet store is 7:3, respectively. If 50% of cats are Siamese and 70% of dogs are Labradors, find the ratio o...
Akash distributed a certain amount of money among his three friends in the ratio of 2:3:4. If, instead, he had divided the amount...
The ratio between the length and breadth of a rectangular board is 7:5. If the breadth of the board is 20.5cm, find the length in cm.
Radius of base of a hollow cone is 8 cm and its height is 15 cm. A sphere of largest radius is put inside the cone. What is the ratio of radius of base ...
Two numbers are in the ratio 3: 2. If 6 and 5 are subtracted from the first and the second number respectively, the ratio becomes 8: 5. The numbers are: