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Question 1:
75 g of sugar solution has 30% sugar in it. Then, the quantity of sugar that should be added to the solution to make the quantity of the sugar 70% in the solution, is
A. 125 g
B. 100 g
Feedback Sugar in original solution = (75 x 30) / 100 = 22.5 g
Let x g of sugar be mixed
According to the question
{(22.5 + p)/(75 + p)} x 100 = 70
2250 + 100p = 75 × 70 + 70p
2250 + 100p = 5250 + 70p
30p = 5250 – 2250= 3000
=> p = 3000/30 = 100g
C. 120 g
D. 130 g

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