Question

Mr. B was arranging chairs for a meeting in the library. Each row contained 15 chairs. There were 16 tables in the library. If there were 21 rows, how many chairs had to be arranged?

Answer 1

If each row contains 15 chairs and there are 21 rows, the total number of chairs in the library can be found by multiplying the number of chairs per row by the number of rows.

Number of chairs per row = 15
Number of rows = 21

Total chairs = Number of chairs per row × Number of rows
Total chairs = 15 × 21
Total chairs = 315

Therefore, Mr. B had to arrange 315 chairs for the meeting in the library.