A sum of money becomes ₹35,280 after 2 years and ₹37.044 after 3 years when lent on compound interest. Find the principal amount.

A sum of money becomes Rs 13380 after 3 years and Rs20070 after 6 years on compound interest.Find the sum.

A sum of money becomes Rs. 4500 after two years and Rs. 6750 after 4 years on com$ pound Interest. The sum is :

A sum of money becomes Rs. 3600 in 2 years and Rs. 5184 in 4 years on compound interest. Find the rate of compound interest.

A sum of money amounts to Rs 10000 after 5 years and Rs 15000 after 8 years at the same rate of simple interest. Find the rate of interest per annum