Respuesta :

Answer: 50%

Step-by-Step Explanation:

Initial => 40
Final => 60
Increase = 60 - 40 => 20

Increase % = Increase/Initial * 100

Therefore,
=> Increase/Initial * 100
= 20/40 * 100
= 20/4 * 10
= 200/4
=> 50

Hence, Increase % = 50%