Quantitative Aptitude - Arithmetic Ability Questions

A can do a work in 24 days and B in 40 days. If they work on it together for 10 days, then what fraction of work is left?

The reciprocal of the sum of the reciprocals of 3/8 and 8/11 is:

The centroid of an equilateral triangle ABC is G. If AB is 6 cms, the length of AG is

In a triangle PQR, the side QR is extended to S. ∠QPR = 72° and ∠PRS = 110°, then the value of ∠PQR is

Reflection of the point (2,­7) in the y­axis is

The ratio of the number of boys and girls in a school is 3:2. If 20% of the boys and 25% of the girls are scholarship holders, the percentage of the school students who are not scholarship holders is

If a+b=5 then the value of a-37+b-27 is

What is the area (in sq cm) of a circle whose circumference is 22 cm?