Math Word Problem

Question

Agnes is 74 years old. She is 8 years older than three times the age of her granddaughter Alice. How old is Alice?

Answer 1

3g + 8 = 74

First, we need to get the term with the variable by itself. Since we have 8 added, we subtract 8 from both sides (8 - 8 = 0 and cancels out).

3g + 8 - 8 = 74 - 8

3g = 66

Now, 3g means 3 times g, so we divide by 3 (3/3 = 1 and we don't say 1g).

3g/3 = 66/3

g = 22 years old