What is the likelihood the next crayon randomly selected will be yellow

So ... there are 10 crayons and 8 are yellow.

This means that 8/10 of the crayons are yellow.

So the chance of picking a yellow one is 80%.

To get this, you need to do 8/10 and make it over 100, which is 80/100. Then, you turn this number into a percent by just dropping the 100 and adding a % to 80 (it's this easy if the bottom denominator is 100)

The work should look something like this;

8:10

8/10

80/100

80%

So, there is an 80% chance that the crayon you pick will be yellow. Any questions?