1.A man put $10 into abank at the beinning of 1900 at compound interest of 8% per annum, compounded annually. How mush can he get back at the end of 2003? (Correct the answer to nearest cent.)
2.The value of a washing machine is now $5000. If its value depreciates by 12% each year,find,correct to nearest cent,
(a)its value after 4 years .
(b)its value 2 years ago .
關於數學的百分率問題?
2010-08-24 2:04 am
回答 (1)
2010-08-24 2:29 am
✔ 最佳答案
1. He can get=$10(1+8%)^104
=$29927.51 (corr. to nearest cent)
2a. Value=$5000(1-12%)^4=$2998.48 (corr. to nearest cent)
2b. Value=$5000/(1-12%)^2=$6456.61 (corr. to nearest cent)
收錄日期: 2021-04-16 00:59:10
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