Quantitative Aptitude - Arithmetic Ability Questions

Of the 3 numbers whose average is 40, the first is 1/3 rd the sum of other 2. What is the first number?

Rs. x invested at 8% simple interest per annum for 5 years yields the same interest as that on Rs. y invested at 7.5% simple interest per annum for 6years. Find x : y.

What is the distance between the points (11,-5) and (-1,0)?

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

Find co-ordinates of the mid point of the segment joining points C (3,-5) and D (-7,3).

If 3x ­- 2(4 ­- 3x) < 2x ­- 5 < 3x + 3; then the value of x is

A rectangular playground ground of length 125 m and width 75 m, has a walking strip of width 3 m in the middle of the ground, along the longer side. What is the area of the ground without the walking strip?

If 4(4x + 5) > 2x - 1 > 4x - 3, then the value of x is