Que: A juice machine has 500 liters of watermelon pulp in stock, 20 percent of which is water.....

This topic has expert replies
User avatar
Elite Legendary Member
Posts: 3991
Joined: 24 Jul 2015
Location: Las Vegas, USA
Thanked: 19 times
Followed by:36 members

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

Que: A juice machine has 500 liters of watermelon pulp in stock, 20 percent of which is water. If another 200 liters of watermelon pulp of which 20 percent is water, is added to the machine what percent, by volume, of the machine’s watermelon pulp contains water?

(A) 10%
(B) 20%
(C) 25%
(D) 30%
(E) 40%

User avatar
Elite Legendary Member
Posts: 3991
Joined: 24 Jul 2015
Location: Las Vegas, USA
Thanked: 19 times
Followed by:36 members
Solution: The resultant percentage will be the weighted average of the percentages of the above two stocks.

=> \(\frac{500\cdot\frac{20}{100}+200\cdot\frac{20}{100}}{500+200}\cdot100\)

=> \(\frac{100+40}{700}\cdot100\)

=> \(\frac{140}{700}\cdot100\)=> 20%

Therefore, B is the correct answer.

Answer B