Question

Ed has $100 more than Robert. After Ed spends $20 on

groceries, Ed has 5 times as much money as Robert."
How much money does Robert have (equation)

Answer 1

I was gonna say do 100-80=20
20/5=16 so 16 is the answer

Answer 2

Ed has x+100

(x+100)-20=5x

x+100-20=5x

x+80=5x subtract x from each side

x-x+80=5x-x

80=4x divide each side by 4

x=20 (amount that Robert has)

x+100=20+100=120 dollars (amount that Ed has)

120-20=5*20

100=100