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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 / deepak pandit
Water content : 5% of 10 ltr.
5/100 * 10 = 0.5 ltr
Now
0.5 ltr = 5% in 10 ltr
0.5 ltr = 2% in (10+x) ltr
As water content remains same after adding pure milk. So, equating both above equations
5/100 * 10 = 2/100 * (10+x)
50 = 20 + 2x
x = 15 ltr.
| Is This Answer Correct ? | 7 Yes | 0 No |
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