What rate gives Rs280 as interest on a sum of Rs 56,000 in 2 years?

The income of a person is Rs. 3,00,000, in the first year and he receives an increase of Rs.10,000 to his income per year for the next 19 years. Find the total amount, he received in 20 years.

A man saves Rs. 32 during the first year , Rs. 36 in the next year and Rs. 40 in the third year . If he continues his savings in this sequence , in how many years will he save Rs. 2000 ?

Susan invested certain amount of money in two schemes A and B which offer interest at the rate of 8% per annum and 9% per annum, respectively. She received Rs. 1860 as annual interest. However had she interchanged the amount of investments in the two schemes, she would have received Rs. 20 more as annual interest. How much money did she invest in each scheme?

A sum of 1000 is invested at 8% simple interest per year. Calculate the interest at the end of each year. Do these interests form an AP? If so, find the interest at the end of 30 years.

Find the amount and the coumpound interest on ₹10,000 for 1 1/2 years at 10% per annum,compounded half yearly.Would this interest be more than the interest he would get if it was compouned annually?

A furniture dealer deals in only two items - tables and chairs. He has Rs. 50,000 to invest and has storage pince of at most 60 pieces. A table costs Rs. 2500 and a chair Rs. 500. He estimates thnt from the sale of one table , he can make a profit of Rs. 250 and that from the sale of one chair a profit of Rs. 75. How many tables and chairs he should buy from the available money so as to maximise his total profit assuming that he can self all the items which he buys.

A man starts repaying a loan as first installment of Rs. 100 If he increases the installment by Rs. 5 every month , what amount he will pay in the 30 th installment ?

If Meena gives an interest of rs 45 for one year at 9% rate p.a. What is the sum she has borrowed?

What do three Rs mean? Give a short note on them.

Aruna has only Rs. 1 and Rs. 2 coins with her. If the total number of coins that she has is 50 and the amount of money with her is Rs. 75, then the number of Rs. 1 and Rs. 2 coins are respectively,