Question

A sold an aricle to B at a profit of 2.5%, B sold
the same article to C at a loss of 10%. If C paid
9.90 for it, how much did it cost to A?
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Answer 1

Step-by-step explanation:

Let article =x

With profit of 2.5%=x+2.5x/100

With loss of 10% = (x+2.5x/100)*10/100 = 102.5x/100

Now new cost = 102.5x/100-102.5x/1000

= 92250x/100000 = 9.9

X= 10.73

So cost = 10. 73