Question

19. A milk vendor bought 28 L of milk at the cost of
*8.50 per L. After adding some water, he sold
the mixture at the same price. If he gains 12.5%,
then how much water did he add?
(a) 5.5 L
(b) 4.5 L
(c) 3.5 L
(d) 2.5 L
a​

Answer 1

Answer:

3.5 L

Step-by-step explanation:

By selling at purchase price, he gained 12.5%

That means he sold 12.5% more milk than he purchased. And the entire 12.5% that he sold extra is water contribution.

So water volume = 12.5% of milk volume

Water = 12.5% of 28 = 3.5 litres

Hope It will help you