Quantitative Aptitude - Arithmetic Ability Questions

3 men dig a hole in 10 days. How many days would it take for 5 men to dg the same hole?

If P : Q = 9 : 7, then what is the value of (P – Q) : (P + Q)?

Determine the value of a/b + b/a when a + b = 8 and ab = 4.

In the following question, select the odd letter/letters from the given alternatives.

Coefficient of x in (x + 11)(3 -­ 5x) is _____.

A factory buys 8 machines. 3 Machine­A, 4 Machine­B and rest Machine­C. Prices of the machines are Rs 45000, Rs 25000 and Rs 35000 respectively. Calculate the average cost (in Rs) of these machines?

A mini-van crosses two people walking at the speed of 4.8 kmph and 6 kmph in the same direction as that in which the mini-van is heading in 4.5 s and 9 s, respectively. What is the length of the mini-van?

If 5x ­- 3 ≥ 3 + x/2 and 4x -­ 2 ≤ 6 + x; then x can take which of the following values?