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

Green= 15/35 0r 3/7 Orange= 5/35 0r 1/7 Both= 20/35 or 4/7

Explanation:

Add up all the balls = 35

Add the orange and green balls = 20

Put into fraction.

20 balls out of the 35.

20/35 or 4/7

Hope this helps.

Answer 2

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