SOLUTION: Four boys and ten girls can cut a field in 5 hours. If the boys work at 5/4th the rate of the girls work, how many boys will be needed to cut the field in 3 hours?

Question 759475: Four boys and ten girls can cut a field in 5 hours. If the boys work at 5/4th the rate of the girls work, how many boys will be needed to cut the field in 3 hours?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
Four boys and ten girls can cut a field in 5 hours. If the boys work at 5/4th the rate of the girls work, how many boys will be needed to cut the field in 3 hours?
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4 boys and 10 girls cutting a field in 5 hours use:
4*5=20 boy-hours+
10*5=50 girl-hours=4/5*50=40 boy-hours
20+40=60 boy-hours required if only boys worked
3/5*60=36 boy-hours required to cut the field in 3 hours
12 boys will be needed to cut the field in 3 hours
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