Calculate the amount and compound interest on
(a) `Rs 10,800` for 3 years at `(12) 1/2%` per annum compounded annually.
(b) `Rs 18,000` for `(2)1/2` years at `10%` per annum compounded annually.
(c) `Rs 62,500` for `(1)1/2` years at `8%` per annum compounded half yearly.
(d) `Rs 8,000` for 1 year at `9%` per annum compounded half yearly. (You could use the year by year calculation using SI formula to verify).
(e) `Rs 10,000` for 1 year at `8%` per annum compounded half yearly.

Explanation

We know that

`A = P[1+(r/100)]^n`

`(i)P = ₹ 10800`

`N = 3 years`

`R = 12(1/2)% = (25/2)% `compounded annually


So,`A = P[1+(r/100)]^n`

`=>A = 10800[1+(25/(2×100))]^3`

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