a can finish a piece of work in 16 days and B in 20 days they work together for 4 days and after that aliens how long will be take to complete the remaining work...
please give correct answer only don't spam give with solution..
and the answer should come 11 days
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Step-by-step explanation:
Time taken by A to finish the work = 16 days
Fraction of work finished by A in 1 day = 1/16
Time taken by B to finish the work = 20 days
Fraction of work finished by B in 1 day = 1/20
Work completed together in 1 day = 1/16 + 1/20 = (5+4)/80 = 9/80
Work completed by both in 4 days together = 9×4/80 = 9/20
Fraction of work remaining = 11/20
Time taken by B to finish 11/20 work = (11/20) ÷ 1/20 = 11/20 × 20 = 11 days.
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