Question. Margaux owns a money lending company. Her friend pays her $5 per day, her brother $8 per day, and her cousin $4 per day. How much money will she collect after 7 days?
Answer. 119
What step-by-step reasoning justifies that answer?
Reasoning: Her friend will pay $5 x 7 = $35 after 7 days. Her brother will pay $8 x 7 = $56 after 7 days. Her cousin will pay $4 x 7 = $28 after 7 days. Therefore, she will be able to collect $35 + $56 + $28 = $119 after 7 days.