Question

Marina bought a bag of 10 chocolate cookies, 35 vanilla cookies, and 30 peanut butter cookies.

If she selects a cookie from the bag without looking, what is the probability she selects a peanut butter cookie?

Answer 1

`(2)/(5)`

Explanation:

1) Add all the values.

= 10 + 35 + 30

= 75

2) 75 will be the denominator and the one required will be the numerator.

Since there are 30 peanut butter cookies, the probability is
`(30)/(75)`.
3) Simplify the fraction if necessary.

Divide both sides by 15.

=
`(2)/(5)`