Answer:
The cost of the sweater in the second store is $22.50
Step-by-step explanation:
From the problem we know that......
$80 = 4c - $10
There for.......
4c = $80 + $10
4c = $90
c = $90 / 4
c = $22.50
Answer: 6.67
Using the similarity theory, we get the equation
5/30 = BM/40
BM = 5*40/30 = 20/3 = 6.67
Answer number 2
it would be m times c
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