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
Answers were Sorted based on User's Feedback
Answer / guest
( c ) 15 litres
|Is This Answer Correct ?||132 Yes||12 No|
Answer / sibin xavier
Current litres= 10
Final % =2
Direct Formula = (Current Litres*( Initial %-final %))/Final
|Is This Answer Correct ?||82 Yes||5 No|
Answer / 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 ?||72 Yes||8 No|
Answer / arpita saha
first case : in 10 lit
water content=(50/100)=.5 lit
water content = (2% of x lit)
as the water content is same in both cases
=> x= 25 lit
so,milk added=(25-10)=15 lit
|Is This Answer Correct ?||39 Yes||6 No|
Answer / naeem ahmad
Since 95% is milk in mixture.
So 95% of 10 + X = 98% of (10 + X)
9.5 + X = 9.8 + 0.98X
So X = 15 liters
Answer is C.
|Is This Answer Correct ?||33 Yes||4 No|
Answer / manoj sharma
Milk pure milk
2. : 3
2 unit = 10 litre
1 unit = 5 litre
3 unit = 15 litre Answer
|Is This Answer Correct ?||10 Yes||1 No|
Answer / nazeera jaffar
Initially 5% is the portion of the water in the mixture,95% is the portion of the milk in the mixture. So quantity of water(in litres) in the 10 L=0.05*10L=>0.5L. And also quantity of milk in 10 L mixture=0.95*10L=9.5L. Let X be the quantity of pure milk to be added to the mixture to make water content to 2%. Therefore, 0.5/(9.5+X)=0.2/9.8 9.8*0.5=0.2(9.5+X) 4.9=1.9+0.2X 0.2X=3.0 x=15 So 15 Liters of pure milk should be added to the mixture to reduce the water content to 2%
|Is This Answer Correct ?||9 Yes||1 No|
Answer / deepak pandit
Water content : 5% of 10 ltr.
5/100 * 10 = 0.5 ltr
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 ?||5 Yes||0 No|
Answer / guest
a) 5 litres
|Is This Answer Correct ?||2 Yes||16 No|
Answer / rajguru
10 litres of milk contains= (.05*10) = 0.5 litres of water
"X" lit of milk = 0.2 lits of water
= (10 * 0.2)/0.5=20 * 0.2 = 4
Hence, none of these
|Is This Answer Correct ?||6 Yes||27 No|
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