A can do a piece of work in 7 days of 9 hours each and b can do it in 6 days
al 7 hours each. how long will they take to do it, working together 8 hours a day?
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A×7×9 = B×6×7
A/B = 2/3
EFFICIENCY OF A =2
EFFICIENCY OF B =3
2×7×9 = 5×8× DAY
DAY. = 63/20 days = 3 (3/20) days
hope it helps
A/B = 2/3
EFFICIENCY OF A =2
EFFICIENCY OF B =3
2×7×9 = 5×8× DAY
DAY. = 63/20 days = 3 (3/20) days
hope it helps
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