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?
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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?
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What is the 50th term of this series:
1, 8, 15, 22 ... ?
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If 8 is X percent of 80, what is 40% of X?
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If decreasing 75 by X percent gives the same result as increasing 45 by X percent, what is the value of X?