Quantitative Aptitude - Arithmetic Ability Questions

Some carpenters promised to do a job in 15 days but 3 of them were absent and remaining did the job in 20 days. What was the original number of carpenters?

If sec -5π/4 = x, then the value of x is

Of the 5 numbers whose average is 76, the first is 3/7 times the sum of other 4. The first number is

Find the area (in sq units) enclosed by y = 0, x+6=0 and 2x-3y=6.

The reciprocal of the sum of the reciprocals of 2/9 and 7/10 is

Excluding stoppages, the speed of a bus is 60 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?

Find the greatest length which can be used to measure exactly three cloth pieces of lengths 1.26 m, 1.98 m and 1.62 m respectively.

When a number is increased by 18, it becomes 106% of itself. What is the number?