18, A sold an aricle to B at a profit of 2.5%, B soldthe same article

1.	18, A sold an aricle to B at a profit of 2.5%, B soldthe same article to C at a loss of 10%. If C paid9.90 for it, how much did it cost to A?
Answer» Please like the solution 👍 Let the article be x. With the 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

18, A sold an aricle to B at a profit of 2.5%, B soldthe same article to C at a loss of 10%. If C paid9.90 for it, how much did it cost to A?

Answer»

Please like the solution 👍

Let the article be x.

With the 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