Answer the following questions

At a simple interest Rs. 3050 becomes Rs. 4026 in four years. If the interest rate was increased by 4% how much would Rs.7500 become in four years ?

A money-lender borrows money at 4% per annum and pays the interest at the end of the year. He lends it at 6% per annum compound interest compounded half yearly and receives the interest at the end of the year. In this way; he ghins Rs. 104.50 a year. The amount of money he borrows, is:

In an election between two candidates, a candidate got 55% of the total valid votes, if the total votes were 15200 and 15% of the votes were declared invalid, then how many valid votes did the other candidate get?

From a point in the interior of an equilateral triangle, the length of the perpendiculars to the three sides are 6 cm, 8 cm and 10 cm respectively. The area of the triangle is

In a question on division, the divisor is 7 times the quotient and 3 times the remainder. If the remainder is 28, then the dividend is 

The sum of four numbers is 64. If you add 3 to the first number, 3 is subtracted from second number, the third is multiplied by 3 and the sum is divided by 3, then all the results are equal. What is the difference between the largest and the smallest of the original numbers?

If A: B=3: 4, B:C =2:3 then what is the value of A +B: B+C: C+A?

Directions: Find the wrong number in the following number series:

4, 5.1, 7.3, 10.6, 15, 20, 27.1