Thermodynamics questions

$1.$ A $22$ kg brass vessel contains $12$ kg of water, $1\mathrm{.}5$ kg of lead, a $3$ kg iron casting, and a $4$ kg copper bar, all at $37\mathrm{.}9\backslash$deg C$.3$ kg of Ice at $0\backslash$deg C is then added to the vessel. How much steam at atmospheric pressure needs to be added to cause the equilibrium temperature to become $90\backslash$deg C$?$ Solve this problem using water equivalent

$2.15$ kg of ice at $-40\backslash$deg C is mixed with $9$ kg of steam at $100\backslash$deg C$.$ When the substances reach equilibrium, what percentage of the total mass of the mixture will be water?