Question

Raja and Ramu were paid Rs.2700 for a work which Raja alone can do in 10 days and Ramu
alone in 12 days. They finished the work in 4 days along with Ravi. Rs. was paid to Ravi.
700
720
520
600

Answer 1

Answer:

600

Explanation:

600 is correct answer

Answer 2

Given :   Raja and Ramu were paid Rs.2700 for a work which Raja alone can do in 10 days and Ramu  alone in 12 days. They finished the work in 4 days along with Ravi.  

To Find : How much Ravi was paid

Solution:

Raja alone can do in 10 days

Raja 1 day work  = 1/10

Raja 4 days work = 4/10  = 2/5

Ramu  alone can do  in 12 days.  

Ramu 1 day work  = 1/12

Ramu 4 days work = 4/12  = 1/3

Raja + Ramu  1 day work  =  2/5  + 1/3  

= (6 + 5 ) /15

= 11/15

Ravi  work =   1 - 11/15  = 4/15

Ravi was paid = (4/15) * 2700  = 720  Rs

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