TS ICET 23 May 2019 Shift 2 Paper

Question : 90 of 200

Marks: +1, -0

40 liters of milk contains 10% of water. How many liters of water are to be added to increase the water content to 20%?

Solution:

Let x be the water to be added.
Then

\;{10 \% \;\text " of "\; 40+x}/{90 \% \;\text " of "\; 40}

=1/4⇒x=5

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