2. Saroj deposited Rs 5,00,000 in a commercial bank for 2 years at 10% p.a. compounded half yearly. But after 1 year the bank changed its policy and decided to

2. Saroj deposited Rs 5,00,000 in a commercial bank for 2 years at 10% p.a. compounded
half yearly. But after 1 year the bank changed its policy and decided to give compound
interest compounded quarterly at the same rate. The bank charges 5% tax on the
interest as per government's rule.
(a) What is the formula to calculate the compound interest compounded half-yearly
on P at R% p.a. for T year?
[1]
(i) C.I. =P[(1 + 100)
R
180.)-1].
R
(iii) C.I. = P[(1 + 3)-¹]
300
(ii) C.I. = P[(1 + 2)²-1]
480)-1]
200
4T
R
(iv) P[(1 + 400
(b) How much net interest did he get the first year?
[2]
(c) What is the percentage difference between the interest of the first year and secon
year after paying tax?
[2