If x>y>0 and p>q>0, then which one of the following expressions must be greater than 1?

The ratio of girls to boys in a class is 3:4. The number of students in the class could be any of the followin...

If (4x-7)

Two third of the faculty members of a department are female. Twelve of the male faculty members are unmarried,...

A salesman travels a distance of 70 miles in 2.5 hours. How much faster, in miles per hour, must he travel to...

Half of the students of a school play football and one third of the rest play cricket. The remaining 300 stude...

Mr. X can do a job in 8 days and his son can do it in 12 days. How many days will it take to complete the job...