Quantitative Aptitude - Arithmetic Ability Questions

A can do a piece of work in 10 days, B can do it in 12 days and C can do it in 15 days. In how many days will A, B and C finish it, working all together?

A car travels a certain distance at 32 km/h and comes back at 68 km/h. What is the average speed for total journey?

The length, breadth and height of a cuboid are in the ratio 19 : 11 : 13. If length is 30 cm more than height, then what is the volume (in cub.cm) of this cuboid?

If 2x-2x=1 (x≠0),then the value of x3-1x3 is

The value of (2+32-3-342) is

After allowing a discount of 20% on Marked price Kishore makes a profit of 12%. What percentage is the Marked price above the Cost price?

If 31% of an electricity bill is deducted, Rs 1794 is still to be paid. How much was the original bill amount?

If (333 + 333 + 333) (233 + 233) = 6x, then what is the value of x?