A restaurant has tables for 4 and tables for 6. If there area a total of 22 tables and 100 chairs, how many tables for 4 are there?
A school library held a book sale. On the first day, 1/3 of all the books were sold. On the second day, 1/2 of the remaining books were sold. After that there were 200 books left. How many books were there at the beginning of the sale?
What is the 50th term of this series:
1, 8, 15, 22 ... ?
If 8 is X percent of 80, what is 40% of X?
If decreasing 75 by X percent gives the same result as increasing 45 by X percent, what is the value of X?