Posted by Rachel on Thursday, January 31, 2013 at 8:47pm.
C*6+12*3=(C+12)4.20
C*6+12*3=(C+12)4.20
amount of cashews ---- x pounds
amount of peanuts ---- 12-x pounds
6x + 3(12-x) = 4.2(12)
6x + 36 - 3x = 50.4
3x = 14.4
x = 4.8
need 4.8 pounds of cashews and 7.2 pounds of peanuts
Proof:
6(4.8) + 3(7.2)
= 50.4
cost per pound = 50.4/12 = 4.2
Ignore my solution
Didn't read the question careful enough
go with bobpursley's solution
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