Question

A box contains 15 yellow, 5 orange, and 15 green tennis balls. If Izzy draws a tennis ball at random out of the box what is the probability that she drew either a green or an orange tennis ball?

Answer 1

P(green or orange) = 4/7

Explanation:

We need to know how many tennis balls there are

total = 15 yellow+ 5 orange+ 15 green

= 35 balls

Probability of green or orange tennis ball is the sum of the green and orange tennis balls over the total balls

P(green or orange) = (green + orange)/total

= (15+5)/35

=20/35

=4/7