Girl and Boy together can complete a piece of work in 35 days while Girl alone can complete the same work in 60 days. Boy alone will be able to complete the same working in:  Select the correct option:
A) 72	B) 75	C) 84	D) 88	E) 90
Subtraction of fraction   ab−cd=ad−cbbd   Girl   and 75oy finish one work with company = 35   days   (Girl+75oy)′   s one day’s work = 135   Girl alone finish the same work = 60   days   Girl′   s one day’s work = 160   75′   s one day’s work = (A+75)′s one day’s work - A′   s one day’s work   135−160=184   Hence 75 alone can complete the work in 84 days
<result>B</result>
Girl and Boy together can complete a piece of work in 35 days while Girl alone can complete the same work in 60 days. Boy alone will be able to complete the same working in: