A gymnasium can hold no more than 560 people. A permanent bleacher in they gymnasium hold 136 people. The event organizes are setting up 25 rows with an equal number of chairs. At most, how many chairs cane be in each row.
560 - 136 = 424
So the rows cannot hold no more than 424 people
So
25C ≤ 424 divide both sides by 25
C ≤ 16.96
There can be no more 16 chairs in a row