A and B complete a work in 6 days. If A alone can do it in 7 days, then B alone can do it in ______________ days.
Given:
A and B together can complete the work in 6 days.
A alone can complete the work in 7 days.
Solution:
Total work = LCM of 6 and 7 = 42
Efficiency of A and B = = 7 unit/day
Efficiency of A = = 6 unit/day
Efficiency of B = 7 - 6 = 1 unit/day
B will complete the whole work = days
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