Kathy can clean 12 house in 10 hrs. if she goes at a steady pace. how many hrs. will it take her to clean 27 houses?

To solve this, set up a proportion with X being our unknown. If she cleans 12 houses in 10 hours, she cleans 27 houses in X hours. It will look like .

Now cross-multiply to get 12x = 27(10) or 12x = 270. Divide by 12 on both sides to isolate x, X = 22.5.

It will take Kathy 22.5 hours to clean 27 houses. Must be some pretty small houses. 

60% (±18%)

Step-by-step explanation: