In a library system with 6 branches, 60 workers are employed. If no library has fewer than 7 workers and no more than 11, what is the minimum number of workers in any 2 of the branches?

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 -

A boy multiplied 423 by a number and obtained 65589 as his answer. If both the fives in the answer are wrong a...

The least perfect square,which is divisible by each 21, 36 and 66 is -