A bank offers 5% compound interest calculated in half yearly basis. A customer deposits tk. 1600 each on 1st January and 1st July of a year. At the end of a year, the amount he would have gained by way of interest is-
সমাধান
সঠিক উত্তর: Option D
For the first half he gets, 1600(1+5/2*100)2
For the Secondf half he gets, 1600(1+5/2*100)
So total Amount= 1600(1+5/200)2 + 1600(1+5/200)
= 1600(1+5/200){(1+5/200) + 1}
=1600(205/200)(405/200)
=3321
Total Gained = (3321-3200) = 121
