Respuesta :

Answer:

19.5

Step-by-step explanation:

15 + 4.5 = 19.5

24 - 4.5 = 19.5

Answer:

19.5

Step-by-step explanation:

You need to find the average of these 2 numbers to find the "middle number".

(15+24)÷2=

39÷2=

19.5

The "middle number" is 19.5