Quantitative Aptitude - Arithmetic Ability Questions

If 9x - [5(2x + 1)/2] = 9/2, then the value of x is?

x and y are two numbers such that their mean proportion is 16 and third proportion is 128. What is the value of x and y?

The price of an article is decreased by 10%. To restore it to its former value, the new price must be increased by

The population of a town is 200000. It increases annually at the rate of 10%. What will be the population after 2 years?

What is the rate of interest if simple interest earned on a certain sum for the 3rd year is Rs 1,750 and compound interest earned for 2 years is Rs 3622.5?

G is the centroid of ΔABC. If AG = BC, then measure of ∠BGC is

20 pens and 46 pencils were purchased for Rs. 235. If the average price of a pencil is Rs. 2.50 then calculate the average price (in Rs.) of a pen.

Car B is running twice as fast as car A. If car A covers a distance of 90 km in 1 1/2 hrs, what is the speed of car B?