Respuesta :

Answer:

n=20

Step-by-step explanation:

5/10 equals 1/2 when simplified since 5÷5=1 and 10÷5=2

Half of 40 equals 40÷2 = 20 so n=20

Another way to do it is

Since the denominator is multiplied by 4 to get to 40

We must multiply 5 by 4 to get the numerator:

5×4=20

So n=20