contestada

A factory produces 80 % round and 20 % square buttons. Suppose that 10 % of theround buttons and 50 % of the square buttons are red. What is the probability that arandomly selected red button is square?

Respuesta :

mhanifa

Answer:

5/9

Step-by-step explanation:

Let the total number of buttons is x.

  • Round buttons = 80% of x = 0.8x
  • Square buttons = 0.2x

Number of red buttons:

  • 0.1*0.8x + 0.5*0.2x =
  • 0.08x + 0.1x =
  • 0.18x

Number of red square buttons is 0.1x

Required probability:

  • P = 0.1x/0.18x = 10/18 = 5/9

Otras preguntas