Question
A milkman mixed milk and water in an empty container in
the ratio 12:7. The quantity of milk mixed was bought by the milkman at the rate of Rs. 37/litre. If he bought the total milk for Rs. 2664, then find the quantity of water mixed in the empty container.Solution
Quantity of milk mixed = 2664/37 = 72 litres So, quantity of water mixed = (72/12) × 7 = 42 litres
 If a nine-digit number 89563x87y is divisible by 72, then the value of √ (8x -6y) will be ∶
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