英文での数学の文章問題です！
英文の文章問題がニガテで・・・どなたか解き方を教えてください．よろしくお願いします．
(1) A market research company discovers that, in the average month, the average Canadian spends $135 on three forms of entertainment: movies, music, and video game. If the average Canadian spend $10 per month on video games than they music, and 3 times as much on movies as the do on music, how much dose the average Canadian spend per month on each from of entertainment?
(2) You have $2000 that received as a gift and want to save for one year to put towards next year’s tuition. The money can be invested in two ways. You can put in a one- year GIC or invest the money in mutual funds. If you put in a one- year GIC, you will receive 4% simple interest over the next year. If you invest money in mutual funds, you earnings will depend on the market growth rate. You will receive simple interest on the $2000 at a rate of 1% less than the market growth rate, but will have to pay a $200 brokerage when you withdraw the funds. For which values of the market growth rate will you make more money from the mutual funds than you will from the GIC?
お礼
cubicsさんの回答を参考に、もう一度、契約書を読んでみました。そうしたら、おっしゃるとおり「残価から１５％ずつ少なく払う」でした。 参考になりました、どうもありがとうございました！！