One canned Juice is 15% orange juice; anohter is 5% orange juice

Question

How many liters of each should be mixed together in order to get 10L that is 13% orange juice?

 

How many liters of 15% orange juice should be in the mixture ??

 

How many liters of 5% orange juice should be in the mixture??

Answer 1

f represents the amount of 5%

10 - f represents the amount of 15%

0.05(f) + 0.15(10 - f) = 0.13(10)

 

Can you solve for f and answer?