Question

Marie, Brad, and Doug went to the mall. Brad spent three times as much money as Marie. Doug spent fifteen dollars more than Brad. If Doug spent $60 at the mall, which of the following equations should be used to find out how much money Marie spent?
A)3(m + 15) = 60 (where m represents the amount of money Marie spent)
B)15m + 3 = 60 (where m represents the amount of money Marie spent)
C)3m + 15 = 60 (where m represents the amount of money Marie spent)
D)3m – 15 = 60 (where m represents the amount of money Marie spent)

Answer 1

D : B + 15 = 60 (solve for B)
B = 60 - 15
B = 45
B : 3M = 45 (solve for M)
M = 45/3
M = 15
ANSWER : 3M + 15 = 60

Answer 2

thank you @kelliegirl22

Answer 3

your welcome :)