Sterna invested an amount of ?16000 for two years at compound interest and received an amount of ? 17640 on maturity. What is the rate of interest?

The difference between a discount of 35% and successive discounts of 20% and 20% on a certam bill 22. Find the amount of the bill.

Find the compound interest on the sum of Rs. 4000@ 12%p.annum at the end of two years?

Ganeshi's monthly income is twice that of Jassi's monthly income. Two-third of Jassi's monthly income is equal to Sukhvinder’s monthly income. If Sukhvinder’s annual income is Rs. 2.34 lacs. What is Ganeshi’s monthly income?(In some cases annual income and in some cases monthly income is given.)

At a simple interest ? 800 becomes ? 956 in three years. If the interest rate, is increased by 3%, how much would ?800 become in three years?

Mr Sridharan invested money in two schemes A and B, offering compound interest @a 8 p.c.p.a. and 9 p.c.p.a. respectively. If the total amount of interest accrued through the two schemes together in two years was F 4818.30 and the total amount invested was F 27,000, what was the amount invested in Scheme A?

A garment company declared 15% discount for whole buyers. Mr Sachdev bought garments from the come for 25,000 after getting discount. He fixed up the sell price of garments in such a way that he earned a profit 8% on original company price. What is the approximate total selling price?