2.David deposits a sum of money in a bank at 4.5% p.a. simple interest rate for 4 years.He deposits the same sum of money in another bank at an interest rate of 8% p.a. compounded quarterly for 2 years.If the simple interest earned is $121 more than the compound interest earned, find each sum of money David deposits.
呢題係compound interest~~
幫我解答下啦~~ ^_^
f.2maths (請過來啦!!) (2)
2007-02-03 3:10 am
回答 (3)
2007-02-03 3:28 am
✔ 最佳答案
let m be the sum of moneymx4.5%x4+m- mx( 1+8%/4)^(2x4)=121
0.18m+m-mx1.02^8=121
0.18m+m-1.17m=121
0.01m=121
m=12100
the sum of money is$12100
2007-02-03 3:44 am
mx4.5%x4+m- mx( 1+8%/4)^(2x4)=121
0.18m+m-mx1.02^8=121
0.18m+m-1.17m=121
0.01m=121
m=12100
0.18m+m-mx1.02^8=121
0.18m+m-1.17m=121
0.01m=121
m=12100
收錄日期: 2021-04-12 23:19:15
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