Respuesta :

mhanifa

Answer:

  • 80

Step-by-step explanation:

  • Half the difference of a number n and 20 ⇒  (n - 20)/2
  • ... is 30 ⇒ = 30

Solve the equation for n:

  • (n - 20)/2 = 30
  • n - 20 = 30*2
  • n - 20 = 60
  • n = 60 + 20
  • n = 80

The number is 80

Answer:

Number is 40

Step-by-step explanation:

Let the number be n

(n - 20)/2 = 30

(n - 20) = 2 × 30

n = (2 × 30) + 20

n = 60 + 20

n = 80