
Andrew M. answered 09/24/17
Tutor
New to Wyzant
Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors
Find the number we multiplied the purchase price by to get the selling price.
45x = 65
Solve for x then subtract 1 from that which represents 100% of the original price
x = 65/45 = 1.4444
This is a 44.44% mark up from the purchase price
check: 45(1.4444) = 64.998 ≅ $65