SOLUTION: last year nasir sold a painting for 2000 .if he had made 25% on the sale.how many much had he paid for the painting?

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Question 979071: last year nasir sold a painting for 2000 .if he had made 25% on the sale.how many much had he paid for the painting?
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
s = c * (1+r)
s is the selling price
c is the cost
r is the interest rate
in your problem:
s = 2000
c = what you want to find
r = .25
equation becomes:
2000 = c * (1.25)
divide both sides by 1.25 to get:
2000 / 1.25 = c
solve for c to get:
c = 1600.
he paid 1600.
he made 25% of 1600 which is 400.
selling price was 2000.