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A sample of milk contains 5% water. What quantity of pure
milk should be added to 10 litres of milk to reduce the
water content to 2%?
(a) 5 litres
(b) 7 litres
(c) 15 litres
(d) 12 litres
(e) None of these
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Answer Posted / bigdummy
10L * .05 = .5L water
(.5L water) = (.05)(10L total)
(.5L water) = (.02)(x L total)
x = .5L/.02 = 25L total
But we're looking for how much milk we have to add, so
25L total - 10L original = 15L pure milk
| Is This Answer Correct ? | 74 Yes | 9 No |
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