15. A piece of work can be done by 6 men and 5 women in
6 days or 3 men and 4 women in 10 days. It can be
done by 9 men and 15 women in
(a) 1 day
(b) 2 days (c) 3 days
(d) 4 days
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Answer:
em 2 dias
Step-by-step explanation:
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