In a certain English class, 1/4 of the number of girls is equal to 1/6 of the total number of students. What is the ratio of the number of girls in the class?

A man walks down the road for half an hour at an average speed of 3 miles per hour. He waits 10 minutes for a...

If 4m =9n, what is the value of 7m, in terms of n?

If the average of five consecutive even numbers is 8, which of the following is the smallest of the five numbe...

Which of the following cannot be a value of 1/x-1?

The savings of an employee equals income minus expenditure. If their incomes ratio is 1 : 2 : 3 and their expe...

Of 30 applicants for a job. 14 had at least 4 years' experience, 18 had degrees, and 3 had less than 4 years'...