Answer: 1) 0.033 liter
2) 1.188 liter.
Explanation:
1) Let x gram of water is added with 99 g sugar,
Thus, the resultant quantity of the mixture = x + 99 gram
Since, water has 0 % of sugar and 99 gram sugar has 100 % of sugar,
⇒ 0 % of x + 100% of 99 = 75% of (x+99)
⇒ 0 + 99 = 0.75 (x+99)
⇒ 99 = 0.75 x + 74.25
⇒ 99 - 74.25 = 0.75 x
⇒ 24.75 = 0.75 x
⇒ 33 = x
Hence, the quantity of water mixed = 33 gram = 0.033 liter. ( 1 liter = 1000 gram)
2) Let y gram of water is added with 12 g sugar,
Thus, the resultant quantity of the mixture = x + 12 gram
Since, water has 0 % of sugar and 12 gram sugar has 100 % of sugar,
⇒ 0 % of y + 100% of 12 = 1% of (y+12)
⇒ 0 + 12 = 0.01 (y+12)
⇒ 12= 0.01 y + 0.12
⇒ 12 - 0.12= 0.01 y
⇒ 11.88 = 0.01 y
⇒ 1188 = y
Hence, the quantity of water mixed = 1188 gram = 1.188 liter. ( 1 liter = 1000 gram)