If the ratio of purple bikes to red bikes is 8 to 12 and there are a total of 100 bikes, how many of them are purple?

How many of them are red?

20x=800

x=40 are purple

wait is it 40 or 60

8/20 = x/100

Cross multiply and solve for x.

To find out how many purple bikes there are, we first need to determine the ratio of purple bikes to the total number of bikes.

The given ratio is 8 to 12, which can be simplified to 2 to 3 by dividing both numbers by their greatest common divisor, which is 4.

Next, we need to calculate how many parts each ratio represents. In this case, each part represents 100 divided by the sum of the parts of the ratio, which is 2 + 3 = 5 parts.

Therefore, each part represents 100 / 5 = 20 bikes.

Since the purple bikes are represented by 2 parts, the total number of purple bikes is 2 * 20 = 40.

Hence, there are 40 purple bikes out of the total of 100.