11. (a) 10 workers working 8 hours a day complete a task in 15 days. How many
(b) In 10 days, 20 workers working 5 hours per day complete
a task. If 25 worker
are employed to work 10 hours per day, how much time is required
to
the task?
hours per day?
(c) 15 men can complete a piece of work in 10 days, working 8 hours per day. How
many people are required to complete
double the work in 25 days, working
(d) 10 men complete a piece of work in 90 days, working
6 hours per day. In
how
many days will 6 men complete
the same piece of work, working
15 hours
p
day?
142 horses for 21 days.
рет
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14.
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