omisha555
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A and B working together complete a work in 35 days. If A takes 60 days to complete it, how long would B alone tale to complete
a) 64 days
b) 72 days
c) 81 days
d) 84 days
plz ......I will surely follow you, if you answer with explanation.​

Respuesta :

crybabxos

Answer:

Efficiency (Work done per day) for :

( ˘ ³˘)/

A & B together = 1/35th

A alone = 1/60th

Thus, efficiency of B alone = Total - A’s efficiency

Step-by-step explanation:

OR Efficiency of B alone = (1/35) - (1/60) = 6/210 - 3.5/210 = 2.5/210 = 1/84th

Hence, since B completes 1/84th work daily, he would take 84 days to complete the work alone.

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