Quantitative Aptitude - Arithmetic Ability Questions

Manoj can do a piece of work in 42 hours. If he is joined by Jayashree who is 100% more efficient, in what time they will finish the work together?

A cuboid has dimensions 8 cm x 10 cm x 12 cm. It is cut into small cubes of side 2 cm. What is the percentage increase in the total surface area?

If A = 30°, B = 60° and C = 135°, then what is the value of sin3A + cos3B + tan3C – 3sin A cos B tan C?

∆PQR is right angled at Q. If m∠R = 45°, then find the value of (cosecP - √3/2)

What is the smplified value of Sin2A/1+Cos2A ?

In the following question, select the odd word from the given alternatives.

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

Two numbers whose sum is 84 can not be in the ratio