A mass m1 of steam at 100 oC is added to mass m2 of ice and mass M of water, both at 0 oC, in a container of negligible

[answerhappygod]

A mass m1 of steam at 100 oC is added to
mass m2 of ice and mass M of
water, both at 0 oC, in a container of negligible heat
capacity. The specific heat of water is c. The latent
heat of vaporization of water is L1 and that of
the fusion of ice is L2.
Which one of the following equations would give the value
of T, the final temperature of the system, assuming
that all the steam condenses, all the ice melts, and that there are
no heat exchanges with the surroundings?