In a flower box there are nine red flowers and six white flowers. There are three times as many yellow flowers as white ones. How many flowers are there in all?

There are three colors, red, yellow and white. Call their numbers R, Y and W.

R = 9
W = 6
Y = 3W = 18
Total number of flowers = 9 + 6 + 18 = 33

To find out the total number of flowers, we can add up the number of red, white, and yellow flowers.

Given that there are nine red flowers, and six white flowers, we need to determine the number of yellow flowers.

Since there are three times as many yellow flowers as white ones, we can multiply the number of white flowers (6) by 3:

6 * 3 = 18

So, there are 18 yellow flowers.

To calculate the total number of flowers, we can add up the number of red (9), white (6), and yellow (18) flowers:

9 + 6 + 18 = 33

Therefore, there are a total of 33 flowers in the flower box.