sam and sylvia work at a book store , duing a sale sam sold 15% more books than sylvia If sam sold 69 books how many did sylvia sell
is it 54 books
69/x = 115/100
Cross multiply and simplify if needed.
http://www.aaastudy.com/rat-prop-crossx.htm
To find out how many books Sylvia sold, let's break down the information given:
1. Sam sold 15% more books than Sylvia.
2. Sam sold 69 books.
First, let's calculate the increase in books sold by Sam compared to Sylvia:
Increase = 15% of Sylvia's sales
If we denote Sylvia's sales as 'x', then the increase in Sam's sales would be 0.15x.
So, Sam's sales would be Sylvia's sales (x) plus the increase (0.15x):
Sam's sales = x + 0.15x = 1.15x
Now we know that Sam sold 69 books, which means:
1.15x = 69
To find Sylvia's sales, we need to solve for 'x':
x = 69 / 1.15
Calculating this:
x ≈ 60
Therefore, Sylvia sold approximately 60 books, not 54.