A can do a work in 10 days while B can do it in 12 days. Both of them work together to do the work. If the total amount paid for the work is Rs.440, how much is A’s share in it?

240

                           A      :      B

Time           :       10    :      12

Efficiency    :       12    :      10

Efficiency             6    :       5     ⇒  11 (Total)

                           ⇓                          ⇓×40

                           ⇓×40                Rs.440 (given)

                          Rs.240/-