Ravi and Kiran work together on a project and complete in 6 days. However Kiran alone completes the same work in 15 days. If they received Rs 3150 while working together, then what was Ravi's share?

Rs 1890

                  Ravi   :   Kiran + Ravi 

Days              6    :       15   =    2  :  5       

Efficiency       5     :        2

Efficiency of Ravi = 5 - 2 = 3

Therefore, Ravi's share = \(\frac{3}{5}\) x 3150 = Rs 1890