Given,
Principal, P =Rs.50000, Rate, R = 10% per annum compounded half-yearly for 1 year.
Now, there are two half years in a year. Therefore compounding has to be 2 times.
And rate = half of 10% = 5% half yearly.
Therefore, the required amount = = Rs 55125
And Compound Interest, C.I. = Amount - Principal
= Rs. (55125 - 50000)
= Rs. 5125