Maria can clean the entire house in two hours. her sister, sasha, can clean the house in three hours. how long would it take for two of them to do the job together?

72 minutes

We require their hourly rate of work

Maria cleans the house in 1 hour

Sasha cleans of the house in 1 hour

let x be the time it takes both to clean the house

+ =

multiply through by 6x

3x + 2x = 6

5x = 6 ⇒ x =

Together they can clean the house in 72 minutes

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it