you fill your car with 15 gallons of gas at a cost of $45. using fractional notation how do you write a proportion that shows how much 5 gallons of gas will cost? use x to represent the unknown cost

Question

a. 15 over 45 = 5 over x
b. 15 over 45 = x over 5
c. 15 : 45 :: x : 5
d. 15 over x = 45 over 5

Answer 1

b. 15 over 45 = x over 5