Question

Each of 10 machines works at the same constant rate doing a certain job. The amount of time needed by the 10 machines, working together, to complete the job is 16 hours. How many hours would be needed if only 8 of the machines, working together, were used to complete the job?

Answer 1

t = 20 hr

Step-by-step explanation:

Given data:

Total number of machine = 10

Total time for machine is 16 hr

we know that
`Time * rate = job`

From the information given in the question we have

[/tex]16\times 10x = job[/tex]

As demand in the question we have

`t * 8x = job` , job will remain same as before so

solving for t

`16* 10x =  t * 8x`

t = 20 hr