Question

A and B together can complete a job in 35 days. While A alone can complete it in 60 days. B
alone can complete the job in:
(a) 42 days
(b) 96 days
(c) 72 days
(d) 84 days.

detailed answer only qualifies​

Answer 1

Answer:

Option(D) is correct

Step-by-step explanation:

Formula Used:

Subtraction of fraction

a/b−c/d=ad−cb/bd

A and B finish one work with company = 35 days

(A+B)′s one day’s work = 1/35

A alone finish the same work = 60 days

A′s one day’s work = 1/60

B′s one day’s work = (A+B)′s one day’s work 

- A′s one day’s work 

=1/35−1/60=1/84

Hence B alone can complete the work in 84 days

Answer 2

Answer:

84

Step-by-step explanation:

A+B =35

A = 60

LCM of 35 and 60 = 420

420/35= 12

420/60= 7

A and B is 12

so efficiency of b is 5

420/5= 84

Please mark me as the brainlest please