A box contains 10 pink rubber bands and 20 brown rubber bands. What is the probability of picking a pink rubber band?
There are a total of 30 rubber bands in the box. The probability of picking a pink rubber band is the number of pink rubber bands divided by the total number of rubber bands. So, the probability of picking a pink rubber band is:
10 pink rubber bands / 30 total rubber bands = 1/3 or 0.33 (rounded to two decimal places)
To find the probability of picking a pink rubber band, we need to determine the total number of rubber bands in the box and the number of pink rubber bands.
Step 1: Calculate the total number of rubber bands
The box contains 10 pink rubber bands and 20 brown rubber bands, so the total number of rubber bands is 10 + 20 = 30.
Step 2: Calculate the number of pink rubber bands
The box contains 10 pink rubber bands.
Step 3: Calculate the probability
Probability is defined as the number of desired outcomes (picking a pink rubber band) divided by the number of possible outcomes (total number of rubber bands).
Probability = Number of pink rubber bands / Total number of rubber bands
Probability = 10 / 30
Simplifying the fraction, we get:
Probability = 1 / 3
Therefore, the probability of picking a pink rubber band is 1/3 or approximately 0.3333.