Question

Lea and Marie are washing all the windows in their house. It would take Lea 80 minutes to wash the windows by herself, and it would take Marie 60 minutes to wash them by herself. Lea creates a table so she can find out how long it will take to wash the windows if they work together. What is the missing value in the table that represents the rate for Marie?

Answer 1

The rate of the windows washed would be the amount of windows per minute. so the missing value is the amount of windows that she has washed

Answer 2

The answer to your question is 1/60t just took the test