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Let the capacity of the tank be 120 litres {LCM (30 and 40)} Efficiency of pipe ‘A’ = 120 ÷ 30 = 4 litres/hour Efficiency of leak ‘A’ = 120 ÷ 40 = 3 litres/hour Combined efficiency of pipe ‘A’ and leak ‘A’ = 4 – 3 = 1 litre/hour Combined efficiency of pipe ‘A’, ‘B’ and leak ‘A’ = 120 ÷ 15 = 8 units/hour Efficiency of pipe ‘B’ = 8 – 1 = 7 units/hour Time taken by pipe ‘B’ and leak ‘A’ to fill the tank = 120 ÷ (7 – 3) = 30 hours
Pipe ‘A’ can fill a tank in 16 hours whereas leak ‘A’ can empty it in 20 hours. If they both operate along with pipe ‘B’, then the given tan...
(141.95 – 112.06) × (45.21 – 38.99) = ?
17, 21, 48, 64, 170
On reducing the marked price of his goods by ₹28, a shopkeeper gains 20%. If the cost price of the article be ₹560 and it is sold at the marked pric...
There are three mixtures A, B and C. Mixture A contains 11% of water and B contains 16% of water. If A and B are mixed together than resultant mixture c...
C purchased 20 kg of oranges at the rate of ₹150 per kg from a wholesaler who uses a weight of 850 grams for the kg weight. C sold all these oranges a...
A merchant initially sells wheat with a 25% profit margin. However, if the selling price is lowered by Rs. 40, the sale results in a 25% loss instead. W...
In a jar initially containing 'm' liters of pure milk costing Rs. 20 per liter, 50% of the milk is taken out, and honey is added to the remaining milk. ...
A shopkeeper has 60 kg rice a part of it, he sells at the profit of 30% and rest at loss of 10% and he get the loss of 8% so what is the quantity sold a...
Cost of two types of pulses is Rs.12 and Rs, 17 per kg, respectively. If both the pulses are mixed together in the ratio 2:3, then what should be the pr...
