Question

Bob can do a job in 5 hours while Bill can do the same job in 8. How many hours would it take them, working together, to do this job?

BTW no one has the right answer plz help me! Just give me an answer and ill literately give you brainliest i'm in a really bad hurry right now PLZ HELP ME!

Answer 1

Answer:

40/30

Step-by-step explanation:

Answer 2

The number of hours that it would take them, working together, to do this job is 3 1/3 hours.

Based on the information given,

Bob's rate = 1/5 job per hour

Bill's rate = 1/8 job per hour

Therefore, the equation to solve the question will be:

1/5 + 1/8 = 1/x

Find the lowest common multiple

8x + 5x = 40

13x = 40

x = 40/13

x = 3 1/13

Therefore, the number of hours that it would take them, working together, to do this job is 3 1/3 hours.

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