A principal of Rs.10,000, ofter 2years compounded annually, the rate of interest being 10% annum during the first and 12% per annum during the second years (in rupees) will amount to :
1). Rs.12,000
2). Rs.12,320
3). Rs.12,500
4). Rs.11,320
Here is the right answer
A =P $(1+\frac{r1}{100})$ $(1+\frac{r2}{100})$
$10000\times\frac{11}{10}\times \frac{28}{25}$
= 12320