Question

I lend someone a 100 cedis loan with an interest of 10% what will be the total money the person will repay me if I want to collect principal also.

Answer 1

If the interest is 10% of the 100 cedis (simple interest for one period), interest = 100 × 0.10 = 10 cedis.
Total repay = principal + interest = 100 + 10 = 110 cedis.

(If interest is compounded or covers multiple periods, the total would be different—tell me the period and compounding if you need that.)