Answer: 2 hours
Step-by-step explanation: I believe it’s 2 hours because, if it takes Tanya and Tim, 3 hours to clean the house and their 3 children to clean the whole house, 6 hours then we divide 6 and 3. That makes us get 2 hours, which seems pretty good to me.
Tanya and Tim can clean the house in 3 hours. Their 3 children can do the same in 6 hours. if the whole family will do it together then, it will take 9 hours.
The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.
Tanya and Tim can clean the house in 3 hours. Their 3 children can do the same in 6 hours.
Tanya and Tim can clean the house = 3 hours.
3 children can do the same = 6 hours.
So,
one child can clean the house = 6/3 hours.
= 2 hours
if the whole family will do it together then, it will take 9 hours.
Learn more about the unitary method;
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