The amount ₹2,100 became ₹ 2,352 in 2 years at simple interest. If the interest rate is decreased by 1%, what is the new interest?

In what time will ₹8000, at 3% per annum, produce the same interest as ₹6000 does in 5 years at 4% simple interest is? 

Atm of ₹2.400. amounts to ₹3,264 in 4 years at a certain rate of simple interest. If the rate of interest is increased by 1% the same sum in the same time would amount to-

The average weight of 40 children of a class is 36.2 kg. When three more children with weight 42.3 kg, 39.7 kg and 39.5 kg join the class, the average weight of the 43 children in the class is: 

In a 20 over match, the required run rate to win is 7.2. If the run rate is 6 at the end of the 15th over, the required run rate to win the match is:

The average of four consecutive even numbers is 9. Find the largest number. 

For an equilateral triangle, the ratio of the in-radius and the outer- radius is

AB is a diameter of a circle with centre O. The tangents at C meets AB produced at Q. If ∠CAB = 34°, then measure of ∠CBA is