word problem

Question

One canned juice drink is 20% orange juice; another is 10% orange juice. How many liters of each should be mixed together in order to get 10L that is 19% orange juice?

Answer 1

Hi Jessica, the way to solve mixture problems is to set up a table. Let x represent the amount of 20% solution needed.

 

Solution      Amount       Decimal         Total

----------------------------------------------------------

20%               x                .20           .20 * x

 

10%           10 - x             .10           .10 * (10 - x)

 

19%              10               .19           .19 * 10

 

Then:

 

.20 * x + .10 * (10 - x) = .19 * 10

 

Solve for x, and you can find out how much of each solution is needed.

 

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