Quantitative Aptitude - Arithmetic Ability Questions

For the inequation x^2–7x + 12 > 0, which one of the following is correct ?

If x - 1/x = 1 then what is the value of 1x1x-1-1x+1+1x2+1-1x2-1?

If the amount received at the end of 2nd and 3rd year at compound interest on a certain Principal is Rs 30250, and Rs 33275 respectively, what is the rate of interest?

A dishonest shopkeeper professes to sell goods at his cost price but uses a false weight of 950 gms, for each kilogram. His gain percentage is

10 people can build a wall in 12 days. Six people, each only half as efficient as those in the first group, will be able to complete 3/5 of such a wall in

Simple interest on a sum for 5 years is equal to 20% of the principal. In how many years interest will be equal to the principal?

Naveen purchased a gas cylinder and a stove for Rs.4500. He sold the gas cylinder at a gain of 25% and the stove at a loss of 20%, still gaining 4% on the whole. Find the cost of the gas cylinder.

The ratio of present ages of Rasika and Shami is 7:5. After 17 years the ratio of their ages will be 12:11. What is Rasika's present age?