Quantitative Aptitude - Arithmetic Ability Questions

What is the simplified value of (cotA + tan B)/(cot B + tan A)?

Junko sold an item for Rs. 220 at a loss of 12%. By how much should she have raised the price to make a profit of 10% ?

A can do a piece of work in 9 days while B can do it in 12 days. A and B together can do the work in

If √(1 + cot2A)/cotA = x, then the value of x is

If 3x -­ 7 = 5x ­- 1, then the numerical value of (x ­- 4)2 is 

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

If x=aCosθCosΦ, y = aCosθSinΦ and z= aSinθ, then the value of x2+ y2 + z2 is

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 1,800, and Rs 1,926 respectively, what is the rate of interest?