Quantitative Aptitude - Arithmetic Ability Questions

If the selling price is Rs 728 after getting a discount of 9%, what was the marked price?

What will be the average of the first 5 positive even numbers divisible by 9?

In what ratio does the point T (3,0) divide the segment joining the points S (4,­2) and U (1,4)?

If A = (-14 + 4) and B = 4 - 14, then AB = 

A ladder 13 m long reaches a window which is 12 m above the ground on side of a street. Keeping its foot at the same point, the ladder is turned to the other side of the street to each a window 5m high, then the width of the street is :

An alloy contains copper and tin in the ratio 3 : 2. If 250 gm of copper is added to this alloy then the copper in it becomes double the quantity of tin in it. What is the amount (in gm) of tin in the alloy?

Two runners A and B start running at 12 km/hr and 16 km/hr towards each other. They meet after 1 hour and 30 minutes. How far (in km) were they from each other when they started?

A, B and C can finish a job working alone in 12, 8 and 24 days respectively. In how many days they can finish the job if they worked together?