If the average of 9 consecutive integers is 0, what is the average of the last 4 of these integers?

If the radius of a circle is decreased by 30 percent, by what percent will the area of the circular region dec...

In a library system with 6 branches, 60 workers are employed. If no library has fewer than 7 workers and no mo...

If 4x is 9 greater than the sum of x and 3y, then x is how much greater than y?

If 8 men can do a job in 12 days, what is the percentage change in the number of days required to do the job i...

The sum of two numbers is 12 and their product is 35. What is the sum of reciprocals of these numbers?

The least number of 5 digits which is exactly divisible by 12, 15, and 18 is -