Mathematics, 10.12.2019 23:31, bonetanne7171

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 machines, working together, were used to complete the job?

a. 18
b. 20
c. 22
d. 24
e. 26

Answers: 2

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Each of 10 machines works at the same constant rate doing a certain job. the amount of time needed b...