Question

Last week at the lake it was 23 °C. Yesterday it was 13 degrees warmer. What was the temperature yesterday?

Answer 1

Answer:

The temperature yesterday was 36 °C.

Step-by-step explanation:

I am going to solve this question building a system of equations.

We have that:

x is the temperature last week at the lake.

y is the temperature yesterday at the lake.

Last week at the lake it was 23 °C.

This means that $x = 23$

Yesterday it was 13 degrees warmer.

This means that

$y = x + 13$

Since $x = 23$

$y = 23 + 13 = 36$

The temperature yesterday was 36 °C.

Answer 2

Answer

36 C

Solution

23+13
= 36