Answer:
T = 60°C
Explanation:
We are given;
Mass of water in both cases as 60g.
Thus; m1 = m2 = 60 g
Temperature of first water; T1 = 40°C
Temperature of 2nd water; T2 = 80°C
Let final temperature be T.
To solve for the final temperature, we will use the formula;
(m1 + m2)T = ((m1•T1) + (m2•T2))
(60 + 60)T = ((60 × 40) + (60 × 80))
120T = 7200
T = 7200/120
T = 60°C