Question

alexis and martin helped the school set chairs in rows for an asembly . they put the same number of chairs in each row. using 92 chairs avalible , alexis made 4 ows with 2 chairs left over while martin made 5 rows with no chairs left over .
a let c represent the number of chairs in each row . write an equation that can be used to find c.
b solve
c alexis and martin are asked to remove 2 chairs from each row . then how many of th 92 chairs were not used for the assembly

Answer 1

(4c+2)+(5c) = 92
9c + 2 = 92
9c = 90
c = 10
So there are 10 chairs in each row

Alexi set up a total of 42 chairs including the extra 2.
Martin set up a total of 50 chairs.

42-(2*4) + 50-(2*5) = ??
92 - 18 = ???

Answer 2

Your answer is 2r