A man invested a certain amount of sum at 15% per annum simple interest and earned an interest of Rs.2100 after 2 years. If the same amount is invested at 10% per annum compound interest, compounded annually for two years, then find the interest.

Let the certain sum of money be Rs.P. So,Â Â P x 0.15 x 2 = 2100 => P = Rs.7000 Desired interest = [(1.1)^{2}Â â€“ 1] x 7000 = Rs.1470

60% of 3840 +? + 30% of 4380 = 40% of 8340 + 10% of 3480

The average of 7 consecutive numbers is 20. The largest of these numbers is

The average of 13 numbers is 10.The average of first 6 numbers is 8 and that of the last 6 numbers is 10. What will be the 13

^{th}number?

More Simple and compound interest Questions

×

×