the perimeter of the a rectangle is 24+6a+20b. If one side is 3a,find other side

Question

Polynomial word problems

Answer 1

perimeter formula is 2(x+y) = 2x +2y

 

let say x = 3a  and y is other side

 

solve for y is to find the other side

 

2(3a) + 2y = 24+6a+20b

 

6a + 2y = 24+6a+20b

 

2y = 24+20b

 

y = 12 +10b

 

the other side is 12 +10b