contestada

Carl can do a particular job in 4
hours. It takes Mike 6.5 hours to
do the samejob.
How long will it take the boys to
complete the job if they work
together?

Respuesta :

s913677

Answer:

The time of working together is x

So

1/x=1/4+1/6.5

x = 2.48

So the time of working together is 2.48 hrs

Step-by-step explanation:

It will take 2.48 hours for both boys to do the job.

Rate

Rate is the ratio that compare two different quantities with different units.

Therefore,

It takes Carl 4 hours to do a job. Therefore,

  • rate  = 1 / 4

It takes Mike 6.5 hours to do the same job. Therefore,

  • rate = 1 / 6.5

The combine rate is as follows;

let

x = time it will take both of them to do the job

1 / x = 1 / 4 + 1 / 6.5

1 / x =  6.5 + 4/ 26

1 / x = 10.5 / 26

26 = 10.5x

x = 26 / 10.5

x = 2.47619047619

x = 2.48 hours

learn more on rate here: https://brainly.com/question/1494952

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