Social Studies, 31.12.2020 14:00 kayladaniels146

if 20 men or 30 girls can do a piece of work in 36 days, in how many days will 10 men. and 12 girls do it?

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if 20 men or 30 girls can do a piece of work in 36 days, in how many days will 10 men. and 12 girls...