PDF chapter test TRY NOW

How much boiling water at 100°C is needed to melt 2 kg of ice so that the mixture which is all water is at 0°C? [Specific heat capacity of water = 4.2 J/Kg and Specific latent heat of ice = 336 J/g].
  
The formula applicable for the above question is
By applying the known values,
 
The mass of required water is  g.