Finding the cost > Anwar would have to incur Rs 600, Rs 900 and Rs 1200 as the expenses if he got a job done by A,B and C respectively. The daily wages of A, B and C are Rs 100, Rs 60 and Rs 40 respectively. Find the cost of Anwar of getting the job done by all three of them (in Rs)? > > (A) 600 > > (B) 700 > > (C) 750 > > (D) 800 I have totally no clue of this question. Any help will be appropriated.

Ok. Then you probably have to think this way: It takes A 6 days, B 15 days, C 30 days to get the job done by himself. So now you have to figure out, how long it takes, if they do the job together, multiply that with their daily wage and add up.

Hint: Solve the equation

d/6 +d/15 + d/30 = 1

d should then be the number of days needed, when they work on it together