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ATQ,
Milk = (1/4) × 960 = 240 ml
Water = 960 – 240 = 720 ml
ATQ:
(240 + x)/(720 + x) = 2/5
⇒ 5(240 + x) = 2(720 + x)
⇒ 1200 + 5x = 1440 + 2x
⇒ 3x = 240
⇒ x = 80
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