SOLUTION: Sandy has two bags of nuts; one with 79% peanuts, and the other with 11% peanuts. To make a 7 lb bag of 49% peanuts, how much of each should Sandy use?
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Question 962369: Sandy has two bags of nuts; one with 79% peanuts, and the other with 11% peanuts. To make a 7 lb bag of 49% peanuts, how much of each should Sandy use? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = pounds of 79% peanuts needed
Let = pounds of 11% peanuts needed
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(1)
(2)
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(2)
(2)
Multiply both sides of (1) by and
subtract (1) from (2)
(2)
(1)
-------------------------
and
(1)
(1)
(1)
3.9118 pounds of 79% peanuts are needed
3.0882 pounds of 11% peanuts are needed
check:
(2)
(2)
(2)
(2)
(2)
OK
hope I got it
