Question
Quantity of milk is 10% more than that of water in 210
litres mixture. On adding (n - 5) litres water and (n + 5) litres milk, the new ratio becomes 11:10. Find the value of 'n'.Solution
Let water = a, milk = 1.1a
⇒ 2.1a = 210 ⇒ a = 100, Water = 100, Milk = 110
Now, (110 + n + 5):(100 + n - 5) = 11:10
⇒ (115 + n):(95 + n) = 11:10
⇒ 10(115 + n) = 11(95 + n)
⇒ 1150 + 10n = 1045 + 11n
⇒ n = 105
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