A is twice as good a workman as B and together they finish a piece of work in 14 days. The number of days taken by A alone to finish the work, is

Ramesh can do a work in 24 days. With the help of his friend shyam, he can do the sme work in 15 days. If they get Rs. 14240 for the work, what is the share of shyam?

A and B can do a work in 10 days. B and C in 12 days while C and A in 15 days. How long would they take if all the three work together?