A bank pays simple interest for money deposited at an interest rate of 10% p.a. When will a sum of money deposited double itself?
可以用代數式~要例式加題解~Thx!!!
F.1 Math (超急急急10點)
2008-12-28 3:29 am
回答 (3)
2008-12-28 3:48 am
✔ 最佳答案
let X be the amount of money, T be the time requiredX+X*10%*T = 2X
X*10%*T = X
0.1T=1
T=10 (year)
So, a sum of money will double itself after 10 years.
2008-12-28 5:29 am
i don't know!
2008-12-28 3:48 am
let Y be the number of year required to double the money
& Z be the money deposited
Z x (10%) x Y = Z
0.1 Y = 1
Y = 10
Hence, it needs 10 years to double the money
& Z be the money deposited
Z x (10%) x Y = Z
0.1 Y = 1
Y = 10
Hence, it needs 10 years to double the money
參考: me
收錄日期: 2021-04-26 20:12:02
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081227000051KK01619