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Investment Interest Rate Calculation Math Project

Investigate how interest ($I) from an investment varies with annual rate (r%) and time (T years). Solve two scenarios based on given rates and times.

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Investment Interest Rate Calculation Math Project

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  1. Math Project 組員:麥巍龍(麥仔龍) 陳智強(小強) 布樂汶(布布) 黃家健(雞虫)

  2. 題目: **難道有4粒星** Q10. 投資一筆款項所得的利息($I)隨年利率 (r%)及投資的時間(T年)而聯變。若以年利 率12%將某筆款項投資2年，則所得的利息是 $1200。 (a) 試以r和T表示I。 (b) 若將同一筆款項以年利率14%投資3年，問所得的利息是多少?回上一頁

  3. 解答: • (a) 試以r和T表示I。 • I Tr • I=kTr • 1200=k(2)(12) *[把I=12000 T=2 r=12代入] • k= • k=50 • 得I=50Tr 回主頁 • 下一頁

  4. (b) • 若將同一筆款項以年利率14%投資3年，問所得的利息是多少? • 解: • I=kTr • I=50Tr[把k=50代入] • I=50(14)(3) [把年利率14代入T中和把投資3年代入r中] • I=$2100回主頁 下一頁回主頁

  5. The End

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