Reynaldo can clean the house in 6 hours by himself. when reynaldo and ruben work together, it takes 3.5 hours. how long would it take ruben to clean the house by himself?

Ruben can clean the house in 8.4 hours.

Step-by-step explanation:

Since we have given that

Number of hours Reynaldo can clean = 6 hours

Number of hours Reynaldo and Ruben can clean = 3.5 hours

Let the number of hours Ruben can clean be 'x'.

Work done by Reynaldo is given by

Work done by both is given by

According to question, we get that

Hence, Ruben can clean the house in 8.4 hours.

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