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Question 1022884: 1.How many inmates are needed to finish washing 600 dishes in an hour if it takes three inmates to wash five dishes within a minute?
2. Six inmates can sort 1,221 laundry items in one and a half hours. What is the average number of laundry items that an inmate can sort in five minutes?
3. Prison facility JKL is due to begin its program of training guide dogs for the blind. If it takes four inmates 70hours to teach one dog a full course, how many inmates will be needed to train a dozen dogs completely in 245 hours?
Answer by jorel555(1290)   (Show Source):
You can put this solution on YOUR website! 1.If it takes 3 inmates 1 minute to wash five dishes, then each inmate, working alone, washes 5/3 dishes per minute. 600 dishes/60 minutes = 10 dishes per minute. 10/(5/3)=30/5=6 inmates to wash 600 dishes in one hour!!!!!!!!!!!
2.1221 items/90 minutes=407/30 items/min
407/30 items/min / 6 inmates=407/180 items/inmate/minute
5 x 407/180=2035/180 items/1 inmate/5 minutes
3.4 inmates x 70 hours=280 man hours per dog.
12 dogs=280 x 12 man hours=3360 man hours
3360/245=96/7 men needed to train 12 dogs!!!!!!!!!!!!!!
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