Quantitative Aptitude - Arithmetic Ability Questions

A and B have their annual average income Rs. 80,000.
B and C have their annual average income Rs. 75,000.
C and A have their annual average income Rs. 78,000.

The annual income of A is ?

The solution set of 4x - 3y = 47 and 3x + y = 32 is

If 1/√(1 -­ sin2A) = x, then the value of x is

If a2+1a2 = 38, then find the value of a-1a?

If the ratio of the angle bisector segments of the two equiangular triangles are in the ratio of 3:2 then what is the ratio of the corresponding sides of the two triangles?

The ratio of two numbers is 5 : 6. If their product is 1470, then what is the sum of both the numbers?

A sum of Rs 6000 becomes Rs 7200 in 2 years, when invested in a scheme of simple interest. If the same sum is invested in a scheme of compound interest with same yearly interest rate (compounding of interest is done yearly), then what will be the amount (in Rs) after 3 years?

Divide 3740 in three parts in such a way that half of the first part, one-third of the second part and one-sixth of the third part are equal.