Quantitative Aptitude - Arithmetic Ability Questions

For triangle ABC, what would be the equation of median AD if co-ordinates of A, B and C are (-5,4), (-4,0) and (-2,2) respectively?

A man buys 7 shirts at Rs 300 each, 2 trousers at Rs 450 each and 1 pair of shoes at Rs 500 each. What is the average expenditure (in Rs) per article?

Car B is twice as fast as car A. If car A covers 90 km in 2 hours, what is the speed of car B?

If x+3y=-3x+y, then x22y2 is equal to

If in a two digit number, the digit at unit place is y and the digit at tens place is 5, then the number is

Of the 3 numbers whose average is 72, the first is 2/7 times the sum of other 2. The first number is

a, b and c are 3 values, such that a + b = 5, b + c = 7.5 and c + a = 8.5. What will be the average of these values?

What is the equation of the line passing through the point (2,-3) and making an angle of -45°with the positive X-axis?