Answer to Question #187552 in Statistics and Probability for Jules

Question

A box contains 500 envelopes: 75 of them contain P1,000, 150 envelopes contain P500, and 275 of them contain P100. You are asked to choose one envelope from the box. What is the probability that the envelope you have chosen is less than P1,000?

Answer 1

Total number = 500

P1,000 = 75

P500 = 150

P100 = 275

The envelope less than P1,000 will be P500 or P100.

$P = \frac{150+275}{500} = 0.85$