The cost of carpet cleaning companies charge is directly proportional to the number of rooms clean the cost of $20 for each room write a direct variation equation to represent the cost how many rooms can a hotel pay the company to clean for $200 write and solve an equation

r = C/20; 10 rooms

Step-by-step explanation:

Let C = the cost and r = the number of rooms.

C is directly proportional to r, so

C = kr, where r is the cost per room ($20).

C = 20r     Divide each side by 20

The equation for the number of rooms is

   r = C/20

If C = $200,

   r = 200/20

      = 10

The hotel can pay enough to clean 10 rooms.

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