If a builder can construct a house using 42 workers in 126 days,how many workers are needed to complete it in 84 days ?
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solve yourself. .......
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→ Given, 56 men can do a piece of work in 42 days.
∴ 1 man can do the same work in 5642 days.
∴ 48 men can do it in 5642×48 days
=36 days
∴ 48 men can do it in 36 days.
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