Only 1 woman

A man, a woman and a girl worked for a contractor for the same period. A man is twice efficient as a woman and a woman is thrice efficient as a girl Rs. 10000 were given to all of them. What is the sum of money received by a woman and a girl together?

A 64-kg woman stands on frictionless ice. She kicks a 0.10-kg stone backwards with her feet so that the stone acquires a velocity of 1.1m/s. The velocity (in m/s) acquired by the woman is :

1 man and 1 woman together can complete a piece of work in 8 days. A man alone can complete the work in 10 days. In how many days, can one woman alone complete the work?