How Much Cold Water Is Needed to Adjust Bath Temperature?

[Madeline1844]

MODERATOR NOTE: MISPLACED HOMEWORK, SO NO TEMPLATE

When filling up the tub for a bath, only the hot water tap was turned on. After realizing the mistake after a minute with half the tub at 60 C, how much cold water (as fraction of the whole tub) at 9 C must be added such that the final temperature of the water is 36 C?

Would the solution have to do with the equation mct=-mct?

Thanks in advance!

 

[mfb]

Would the solution have to do with the equation mct=-mct?

If you fix the symbols there (are the mct on the left and right side the same thing?) and write down what they mean, you can use this formula, yes.