A sum of Rs.2500 is lent out in two parts one at 12% and another one at 12.5%. If the total annual income is Rs.306, then what was the money lent at 12% and what at 12.5%?

1300@12% & 1200@12.5%

A invested 1/3 of his capital at 7%, 1/4 at 8% and remainder at 10%. If his annual income is Rs.1122, then what is capital?

Raju and Sohan invest in a business in the ratio 3:2. If 5% of the total profit goes to charity and Raju's share is Rs.1710, then what is the total profit.