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Tatiana [17]
3 years ago
8

12 workers take 4 hours to complete a job. How long would it take 15 workers to complete the job?

Mathematics
2 answers:
zhenek [66]3 years ago
8 0

Answer:

3 hours and 12 minutes.

Step-by-step explanation:

12 Workers complete a job in 4 hours

1 worker complete a job 12 × 4 = 48

15 workers complete a job = 48/15 = 3³/¹⁵ = 3¹/⁵

= 3 hours + 1/5 × 60  minutes = 3 hours 12 minutes.

slavikrds [6]3 years ago
6 0

Answer:

3.2 hours

Step-by-step explanation:

12 workers * 4 hours = 48 worker hours

15 workers  * x hours = 48 worker hours

48 /15 =3.2 hours

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