My question is: Julieta went to the store to buy a backpack and three ring-binders for her school supplies. She knew the backpack was $50, and each ring-binder cost was $20. However, at the store, she found out that the price of a back had increased by $5, and the price of a ring-binder had reduced by $2. Calculate the total amount of money Julieta spent at the store. Your thoughts:
Initially, a backpack cost was $50; when it increased by $5, the price became $50 + $5 = $55. The price of a ring - binder $20, when it reduced by $2, the price became $20 - $2 = $18. If she wanted to buy 3 ring - binders, she spent $18 * 3 = $54. In total, Julieta spent $55 + $54 = $109. The final answer: 109.