1.33 kg of ice at 0°C is added to an 8.25 kg tub of water at a warmer temp. If their final temp is 15.7°C, What was the inital temp of the water in the tub?

Please help, I cannot get the right answer.

3 answers

Sum of heats gained is zero.
Heat gained by ice + heat gained by tub water=0
1.33*Hf+1.33cwater*(15.7-0)+8.25cwater*(15.7-Ti)=0
solve for Ti
Thank you for all your help - however, i carried out the calculations you gave me exactly, and I got 18.2 as my answer, i entered it into my program, and it says its incorrect..? Am i missing something?
31.1
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