Answer:
8.8
Step-by-step explanation:
set up a system
let x be sour keys and y be chocolate bars
2.65=15x+2y
3.35=10x+3y
then solve
X turns out to be 0.05
y turns out to be 0.95
multiply : 24*0.05=1.2
multiply : 0.95*8=7.6
add : 1.2+7.6 = 8.8
22=2b
66=6b
50=b+39
2=b-9
matrix multiplication is possible in this matrix
c+5=8
Subtract 5 from both sides.
c=8−5
Subtract 5 from 8 to get 3.
c=3
hope it helps :)
