Quantitative Aptitude - Arithmetic Ability Questions

If 8x/3 + [7(5 - 2x/3)]/2 = 1/2 , then what is the value of x?

What is the value of (3/5 + 7/9)?

In ∆DEF measure of angle E is 90°. If secD = 25/7, and DE = 1.4cm, then what is the length (in cm) of side DF?

If x + [1/(x + 7)] = 0, then what is the value of x – [1/(x + 7)]?

An hour-long test has 60 problems. If a student completes 30 problems in 25 minutes, then the required seconds he has taken on average for computing each of the remaining problems is

For the data given below. find the sum of mode. median and mean.6, 3, 8, 4, 3, 11, 7, 4, 5, 4.

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

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