7 men can finish one job in 54hrs. how fast that job can be done by 9 men?

2 ⤊

2006-11-16 12:55:59 · 4 answers · asked by MATH_IQ 1 in Business & Finance ➔ Careers & Employment

The job took 7 men * 54 hr = 378 man-hours
Therefore 9 men takes 42 hours.

2006-11-16 12:59:48 · answer #1 · answered by feanor 7 · 0⤊ 1⤋

Probably 54 hours, or until the money runs out.

2006-11-16 21:09:17 · answer #2 · answered by Neil S 4 · 0⤊ 2⤋

38.52 Hr's

54 / 7 = 7.714 hours for each worker
2 extra men would take off 15.428 hours

54 Hours - 15.428 = 38.52

2006-11-16 21:01:58 · answer #3 · answered by myothernewname 6 · 1⤊ 1⤋

It will take longer, because there will be more talking about hockey going on.

2006-11-16 20:58:08 · answer #4 · answered by Anonymous · 1⤊ 2⤋