Quantitative Aptitude - Arithmetic Ability Questions

The rate of simple interest per annum at which a sum of money double itself in 16 2/3 yrs is

In ΔDEF, G and H are points on side DE and DF respectively. GH is parallel to EF. If G divides DE in the ratio 1:3 and HF is 7.2 cm, find length of DF?

If 2x2+2y2=4a the find the value of 2ax2-a+2ay2-a

A dealer is selling an article at a discount of 5% on the Marked price. If the Marked price is 12% above the cost price and the article was sold for Rs. 532 then the cost price is (in Rs.)

A photographer allows a discount of 10% on the advertised price of a camera. The price (in Rs) that must be marked on the camera, which cost him Rs 600, to make a profit of 20% would be

What is the simplified value of 22433+393-11253?

If 123 x 356 = 43788, then 1.23 x 0.356 = ?

What will be the average of the first 5 positive even numbers divisible by 9?