New Math Drill : Level 1 : Ratios and Proportions Problem2(2) JISSENJOSHIGAKUEN-2014

I mix water and 32 g of salt to make 16% of salt solutions. 

Find the weight of water. 

Answer

168 g

Solution

Because 16% of salt solution is salt of 32 g, the weight of the salt solution is 32 / 0.16 = 200 g. 

Therefore water weighs 200 - 32 = 168 g.