In October, Greg and Thomas had the same amount of money in their savings accounts. In November, Greg deposited $120 into his account. Thomas increased the money in his account by 20%. When they compared their balances, they found that they were still equal.

How much money did they both have in their accounts in October?

$

Question

In October, Greg and Thomas had the same amount of money in their savings accounts. In November, Greg deposited $120 into his account. Thomas increased the money in his account by 20%. When they compared their balances, they found that they were still equal.

How much money did they both have in their accounts in October?

$

texaschic101 · Answer

x = money in savings account in Oct

Greg = Thomas
x + 120 = x + .20x -- subtract x from both sides
x - x + 120 = .20x -- combine like terms
120 = .20x -- divide both sides by .20
120/.20 = x
600 = x

check..
Greg -- 600 + 120 = 720
Thomas -- 600 + .20(600) = 600 + 120 = 720

The money they had in the account in Oct. was $ 600 .... and in November, they both had $ 720.