29.Mr Lee deposits $18,000in BankA atan interest rate of 5.5% p.a.At the same time,
he deposits $42,000 in BankB at an interest rate of 8.5%p.a.If 2.5years later the
total simple interest that he receives from the two banks is x% of his original principal,
find the value of x.
(Please help me to solve the question and show the steps clearly and better to explain the question) Thanks all for your help!
Maths.: difficult questions in percentage -(15)
2006-11-19 4:06 am
回答 (2)
2006-11-19 4:20 am
✔ 最佳答案
Simple interest received in Bank A:= Principal (18,000) X Interest rate (5.5%) X No. of Year (2.5)
= 2,475
Simple interest received in Bank B:
= Principal (42,000) X Interest rate (8.5%) X No. of Year (2.5)
= 8,925
Total simple interest received from Bank A and Bank B:
= 2,475 + 8,925
= 11,400
Percentage of the total simple interest received of the total original principal:
= Total simple interest (11,400) / Total principal (18,000 + 42,000 = 60,000) X100%
= 19%
Therefore,
x% = 19%
x = 19
參考: None
2006-11-20 2:10 am
題目話李生在Bank A存了$18,000, 年利率5.5%. 同一時間, 他在Bank B存了$42,000, 年利率8.5%, 2.5年後他收到的單利息是本金的x%, 求x.
先計在每間銀行收到的利息: (公式: 本金X年利率X年期)
Simple interest received in Bank A
= 18,000 X 5.5% X2.5
= 2,475
Simple interest received in Bank B
= 42,000 X 8.5% X 2.5
= 8,925
合計利息
= 2,475 + 8,925
= 11,400
Percentage of the total simple interest received of the total original principal: (利息/本金)X100%
= [11,400 / (18,000 + 42,000)]X100%
= 19%
so x = 19
先計在每間銀行收到的利息: (公式: 本金X年利率X年期)
Simple interest received in Bank A
= 18,000 X 5.5% X2.5
= 2,475
Simple interest received in Bank B
= 42,000 X 8.5% X 2.5
= 8,925
合計利息
= 2,475 + 8,925
= 11,400
Percentage of the total simple interest received of the total original principal: (利息/本金)X100%
= [11,400 / (18,000 + 42,000)]X100%
= 19%
so x = 19
參考: myself
收錄日期: 2021-04-13 14:11:06
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