If 15 men or 24 women or 36 boys can do a piece of
work in 12 days, working 8 hours per day, how many
men must be associated with 12 women and 6 boys to
do another piece of work 2.25 times as large in 30 days
working 6 hours a day?
a). 4
b). 6
d). 10
c). 8
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Answer:
8
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