Quantitative Aptitude - Arithmetic Ability Questions

A train runs at 80 kmph for the first 40 km and the next 30 km at 60 kmph. Find the average speed.

If a+1a=2 then the vealue of a5+1a5 will be

The difference between the place values of 9 and 5 in the number 428693745 is

tan2Asin2Ais equal to

What is the area (in sq cm) of a rectangle if its diagonal is 25 cm and one of its sides is 24 cm?

The line passing through (­3,4) and (0,3) is perpendicular to the line passing through (5,7) and (4,x). What is the value of x?

What is the equation of the line whose y­-intercept is ­3/4 and making an angle of 45° with the positive x-­axis?

If 8x/3 + [7(5 - 2x/3)]/2 = 1/2 , then what is the value of x?