The simple interest on a certain sum at 15% per annum for 5 year is Rs1500 more to the simple interest on the same at 12% per annum for the same period. Find the sum-

The average marks obtained in a class of 50 students is 70%. The average of first 25 is 60% and that of 24 is 80%. What is the marks obtained by the last student?

If $${(2cos^3 A-cosA)\over (sin A- 2 sin^3 A)=1}$$ then what is the value of A?

Direction : The table given below represents number of bikes of five different brands sold from 2001- 2005, with the help of data given in the table, answer the following questions.

What is the ratio of average sales of TVS in year 2002 and 2005 to the average sales of Honda in year 2001 and 2004?

A cycle seller gives 10% discount on marked retail price and still earns 26% profit. If marked retail price of the cycle is Rs. 840/- Then how much money was paid by the seller for that cycle?

Directions: The table given here shows the production of five types of cars by a company in the year 1989 to 1994. Study the table and answer questions.

In which year the production of cars of all types taken together was approximately equal to the average of the total production during the period?

What is the L.C.M of 12, 36, 6 and 9?

A started the business with the investment of Rs. 36000. B and C joined him with some investments after 3 and 6 months. The profit is divided in the ratio of 2 ∶ 3 ∶ 5 at the end of the year. Find the difference between the investment made by B and C in the business.