Quantitative Aptitude - Arithmetic Ability Questions

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

Ganesh invested an amount of Rs x in a fixed deposit scheme offering 5% per annum for 1st year and 15% per annum for 2nd year and received an amount of Rs 9660 after two years. What is the value of x (in Rs)?

In an examination, 35% of total students failed in Hindi, 45% failed in English and 20% failed in both. Find the percentage of those studnets who passed in both the subjects ?

In the given figure, OX, OY and OZ are perpendicular bisectors of the three sides of the triangle. If QPR = 65 deg and PQR = 60 deg, then what is the value (in deg) of QOR + POR ?

A bag has Rs12.9 in the form of 1 rupee, 50 paise and 10 paise coins in the ratio of 3:2:3. How many 50 paise coins are there in the bag?

Rs. 782 is divided into 3 parts in the ratio 12:23:34, the first part is 

If cot A = n/(n + 1) and cot B = 1/(2n + 1), then what is the value of cot (A + B)?

If a3+ b3 = 19 and a + b = 1, then what is the value of ab?