Question:To a sugar solution of `3` litres containing `40%` sugar, one litre of water is added. The percentage of sugar in the new solution is : 

A `13 1/3%` 
B `15%` 
C `30%` 
D `33%` 

+ Answer
C 

+ Explanation
Sugar` = (40/100 xx 3) litres`

`= 1.2 litres,`

 water`= 1.8 litres`

New percentage`= (1.2/4 xx 100)%`

`= 30%`

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Irin Moni

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