Question

One litre of water at 30 °C is mixed with one litre of water at 50 °C. The temperature of the mixture will be
(a) 80 °C.
(b) more than 50 °C but less than 80 °C.
(c) 20 °C.
(d) between 30 °C and 50 °C.​

Answer 1

Answer:

20°C

Explanation:

Because 30°C is cool water as compare to 50°C then 50-30=20

Answer 2

Answer:

20°C IS ANSWER

Explanation:

80°C

More than 50°C but less than 80°C

20°C

Between 30°C and 50°C

=30-50=20.C