Question 114405
Jonathan needs a mixture of 86% oats and 14% corn. He currently has 21 pounds of a
mixture of 32% oats. How many pounds of oats should be added to the mixture.
:
Write an equation based on the % oats
:
Let x = amt of 100% oats to be added to achieve 86% mixture 
:
.32(21) + 1.0x = .86(x+21)
:
6.72 + x = .86x + 18.06
:
x - .86x = 18.06 - 6.72
:
.14x = 11.34
:
x = 11.34/.14
:
x = 81 pounds of oats required
:
:
Check solution:
.32(21) + 81 = .86(81 + 21)
6.72 + 81 = .86(102)
87.72 = 87.72