Answer:
20 lbs of 9%
10 lbs of 15%
Step-by-step explanation:
x: 9%
y: 15%
x + y = 30
y = 30 - x
0.09x + 0.15y = 0.11(30)
0.09x + 0.15(30 - x) = 3.3
-0.06x = -1.2
x = 20
y = 10
y = 30 - x
If the two equations in parenthesizes were there own equations which ones would equal 1 and 6
(x-1) or x=1
(3x-1) or x=1/3
3(x-1) or 3x-3 or x=1
Do you understand?
-- point (1, -2)
-- point (10, 25)
