SOLUTION: Hi could you help me answer this question.Thanks! 2 men can unload 250kg of goods in 9 hours.How many men are needed to unload 625kg of goods in 3 hours?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: Hi could you help me answer this question.Thanks! 2 men can unload 250kg of goods in 9 hours.How many men are needed to unload 625kg of goods in 3 hours?      Log On


   

Question 1084280: Hi could you help me answer this question.Thanks!
2 men can unload 250kg of goods in 9 hours.How many men are needed to unload 625kg of goods in 3 hours?
Answer by josgarithmetic(39613) About Me  (Show Source):
You can put this solution on YOUR website!
r, rate of work of 1 man
n, unknown number of men

system%282%2Ar%2A9=250%2Cn%2Ar%2A3=625%29

r=250%2F18
-
n=625%2F%283%2Ar%29
n=625%2F%28%28250%2F18%29%2A3%29
n=%2818%2A625%29%2F%28250%2A3%29
highlight%28n=15%29