Quantitative Aptitude - Arithmetic Ability Questions

The line passing through (-2,5) and (6,b) is perpendicular to the line 20x + 5y = 3. Find b?

What is the value of √2 Sec 45 - Tan 30?

Asif is twice as good as workman as Bashir and together they finish a piece of work in 30 days. In how many days will Asif alone finish the work?

If X=32, then the value of 27x3-54x2+36x-11 is

If cosecA - cotA = x, then the value of x is

If the angle of elevation of the top of a pillar from the ground level is raised from 30° to 60°, the length of the shadow of a pillar of height 503 will be decreased by

A missile travels at 1440 km/h. How many metres does it travel in one second?

Two buses are moving towards each other with speed of 20 km/hr and 34 km/hr respectively. What will be the distance (in metres) between the two buses one second before they collide?