A garden contains 40 flowers, 30 of which are red. What is the frequency of red flowers?

The frequency of red flowers can be calculated by dividing the number of red flowers by the total number of flowers and then multiplying by 100 to get a percentage.

Frequency of red flowers = (Number of red flowers / Total number of flowers) * 100

Frequency of red flowers = (30 / 40) * 100

Frequency of red flowers = 0.75 * 100

Frequency of red flowers = 75%

Therefore, the frequency of red flowers in the garden is 75%.