The interest on a certain deposit at 4.5% p.a. is TK. 202.50 in one year. How much will the additional interest in one year be on the same deposit at 5% p.a. ?

The interest on a certain deposit at 4.5% p.a. is TK. 202.50 in one year. How much will the additional interest in one year be on the same deposit at 5% p.a. ? Correct Answer TK. 22.50

For 4.5% p.a I = pnr/100 P = I × 100/nr = ( 202.50 × 100)/( 1× 4.5) = 4500 for 5% p.a I = pnr = 4500 × 1 × 5/100 = 225 The total additional interest = ( 225 - 202.50)Tk. = 22.50tk.
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