A man can complete a job in 24 days and his wife can complete the same job in 30 days. How long will they take to complete the job if they work together?
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man =1/24
wife=1/30
man +wife = 1/24 +1/30
=54/120
=9/20
reciprocal of working days =20/9 =2 2/9 days
wife=1/30
man +wife = 1/24 +1/30
=54/120
=9/20
reciprocal of working days =20/9 =2 2/9 days
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