1.

1). 160 ml2). 120 ml3). 280 ml4). None of these

Answer»

⇒ Let ‘x’ be the quantity of milk in the original mixture

⇒ $(\frac{7}{3} = \frac{x}{{120}})$

⇒ Quantity of milk, x = (120 × 7)/3 = 280ml

⇒ the mixture contains 280 ml of milk and 120 ml of water

⇒ The expected new RATIO of milk : water is 1 : 1

⇒ Let ‘y’ be the EXTRA water added to make the mixture have milk and water in equal parts

THUS, 120 + y = 280

⇒ y = 160 ml

∴ Extra water added = 160 ml



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