Quantitative Aptitude - Arithmetic Ability Questions

Point Q(-1,b) is the midpoint of segment EF. Co-ordinates of point E are (-4,a) and point F are (2,0). What is the value of a and b?

Vikram and Vivek can finish a work in 50 days. They worked together for 20 days and then left. How much work has been done by them?

P can make a table in 16 days while Q can make it in 20 days. Q started the work and did that work for 5 days. In how many days P can complete the remaining work?

Convert the 0.0068 in to vulgar fraction:

An object travels 23 m in 3 s and then another 15 m in 2 s. What is the average speed of the object?

Simple interest on a sum for six months at 5% per annum is Rs 65.5.What is the value (in Rs) of sum ?

What will be the acute angle between the hour-hand and the minute -hand at 2:13 p.m?

If ab = 21 and a+b2a-b2 = 254,then the value of a2+b2+3ab