Question

two years ago, Greg was three times as old as his brother. in 4 years, he will be only twice his brother's age. how old is his brother now?

Answer 1

let "g" be the age of greg
let "b" be the age of his brother

2 years ago, their ages would be "g-2" and "b-2"

3(b-2)=g-2

in 4 years, their ages would be "g+4" and "b+4"

2(b+4)=g+4

now you have 2 equations with 2 unknowns, so just solve for b

Answer 2

ok

Answer 3

do you understand where i got the equations from?

Answer 4

yes, im trying to solve it now.

Answer 5

what is the answer?

Answer 6

give me a sec, i did not attempt to solve

Answer 7

3(b-2)=g-2
2(b+4)=g+4

3b-6=g-2
2b+8=g+4

3b-4=g
2b+4=g

Answer 8

and the answer issssss?