A man sold an article for $90, thus making a profit of 12.5%. What was the cost price of the article?

So a Man sold an article for $90 and made a 12.5% profit.
First what’s 10% of $90=$9
Second 1%of $90=$0.90
Third what’s 1/2 or 50% of $0.90=$0.45
Now
$9+$0.90+$0.90+$0.45=$11.25
$90+$11.25=$101.25

Answers:
Profit=$11.25
Price=$101.25

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm