Question: Yasmin deposited a $50 birthday check from her grandmother in her bank account. The check was worth a quarter of her new balance after the check money is added. How many dollars were in her account before she deposited the check?
Work out the solution step by step. 
Answer: 
The $50 check is worth 1/4 of Yasmin’s new balance, so her new balance is 50 * 4 = $200.
Thus, Yasmin had 200 - 50 = $150 in her account before she deposited the check.