in july the price of a gallon of gas rose 12%. In August it fell 15%of its final July price ending the month at 1.19. What is the price at the start of July?

Question

I cannot get this problem the answer sheet says the answer is 1.25 but I cant figure it out

Answer 1

p represents the pre-July price

1.12p represents the July price

(0.85)(1.12)p represents the August price

 

(0.85)(1.12)p = 1.19

 

Can you solve for p and answer?