Question

A dealer mixes 120 liters of milk containing 5% water with 80 liters of milk containing 10 % water. the percentage of water in the mixture is??

Answer 1

9514 1404 393

Answer:

7%

Explanation:

Let x represent the percentage of water in the mix. The amount of water in the mix is ...

5%·120 +10%·80 = x·(120 +80)

14/200 = x = 7% . . . . . . . . . . . . . . simplify, divide by 200

The percentage of water in the mixture is 7%.