Question

Find the probability of this event. Enter the answer as a fraction in simplest form, as a decimal, and as a percent.

You choose a marble at random from a bag containing 12 red, 8 blue, 11 green, 8 yellow, and 21 black marbles.

The marble is red.
The probability expressed as a fraction is
The probability expressed as a decimal is
.
The probability expressed as a percent is %

Answer 1

60 total marbles

12 red

so,

12/60 red.

1/5 as a fraction

.20 as a decimal

20%