F3 數學急問!_! 20點!!

👨🏻‍🏫 學術台數學

[匿名]

2010-08-28 3:24 am

1. Find the salaries tax for a person whose monthly salary is $13 500. Given that the basic allowance is $108 000.

2. Mary has to pay salaries tax of $8400 in the year 2008-2009. Find her monthly salary in the year 2008-2009. Give that the allowance is $108 000.

3. John borrowed $50 000 from a bank at an interest rate of 15% p.a.The interest was compounded monthly. Starting from first month, he repaid $3000 to the bank at the end of each month. Can she repay the loan after 2 years? Briefly explain your idea.

這三題~~ 謝謝~

更新1:

==== Salaries tax rates for the financial year 2008-2009 : Net chargeable income($)---------------Rate On the first 40 000--------------------------2% On the next 40 000-------------------------7% On the next 40 000-------------------------12% Remainder ----------------------------------17% ==== 無國家..Orz 謝謝~

回答 (2)

用戶46949

2010-08-29 8:02 am

✔ 最佳答案

1.13,500 x 12 months =162,000
162,000-10,8000=54,000Salaries tax =40,000 x 2% +(54,000 -40,000) x 7%=800 + 980=1,780 2.Salaries tax is 8,400(40,000 x 2%) +(40,000 x 7%) +(40,000 x 12%) = 800 + 2,800 + 4,800=8,400Mary's annual salary is 40,000 + 40,000 + 40,000 + 10,8000=228,000Monthly Salary is 228,000/12 =19,000

2010-08-29 00:28:01 補充：
3. $50,000 (1+ 15/12 %)^24
=$ 50,000 *1.0125^24
=$50,000 * 1.347
=$67,367.6

After 24 months, John paid $3,000 x 24
=$ 72,000 > 67,367.6

2010-08-29 00:28:12 補充：
He can repay all the loan after 2 years, as his payment larger than the borrows with interest, and the actual loan is less than $67,367.6 since we haven't deduct $3,000 each month yet

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2010-08-28 8:02 am

你無講邊年, 點幫你?
最好講埋國家

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