# maths

1.Mr Ko earns \$12000 per month.The rateable value of his flat is equal to 70% of his annual income. If the percentage of rateable value is 5%,how much should Mr Ko pay for the quarterly rates of his flat?

2.Find, correct to the nearest dollar, the compound interest on \$15000 at 6% p.a. for 2 years , compounded monthly.

THX...thx..^^

### 1 個解答

• 最佳解答

1.Mr Ko earns \$12000 per month.The rateable value of his flat is equal to 70% of his annual income. If the percentage of rateable value is 5%,how much should Mr Ko pay for the quarterly rates of his flat?

The rateable value of Mr. Ko’s flat

= 12 000 X 12 X 70%

= \$ 100 800

So, the value that Mr. Ko should pay for the quarterly rates

= 100 800 X (3 X 5%)

= \$15 120

2.Find, correct to the nearest dollar, the compound interest on \$15000 at 6% p.a. for 2 years , compounded monthly.

As there are 24 months in 2 years,

Compounded interest

= 15 000(1 + 6% / 12)24 – 15 000

= 15 000(1.005)24 – 15 000

= 15 000(1.00524 - 1)

= \$1907 (cor. to the nearest dollar)

資料來源： Myself~~~