What percent of water must be mixed with honey so as to gain 20% by selling the mixture at the cost price of…
What percent of water must be mixed with honey so as to gain 20% by selling the mixture at the cost price of honey?
20%
10%
5%
4%
Solution
Let cost price of honey be Rs. 1 per gram, so 100 grams of honey costs Rs. 100. For a 20% gain, the selling price is Rs. 120, meaning 120 grams of mixture is sold. Water added = $120 - 100 = 20$ grams. Required percent of water = $(20/100) \times 100 = 20\%$.