Answered

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Pedro and Carmela are cleaning their kitchen. It takes Pedro 3 hours to clean the kitchen by himself, while Carmela can clean the kitchen in 2 hours.

Which equation can be used to calculate how long it will take them to clean the kitchen if they work together?

A.3/2t=t

B.t/3+t/2=1

C.3/t+2/t=1

D.3t+2t=1

Sagot :

Answer:

B

Step-by-step explanation:

Here, we want to choose the equation representing the time it will take if they worked together

Let the amount of tasks to be done be t

pedro will work at a rate of t/3

Camela will take t/2

So the joint rate will be

t/2 + t/3

This joint rate will be equal to 1

Thus, we have

t/2 + t/3 = 1

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