Three time the present age of a father is equal to eight times the present age of his son. Eight years hence the father will be twice as old as his son at that time. What are their present ages?

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...