Math: Some landscapers just finished planting a new flower garden. They used pink, yellow, and blue flowers. For every 6 pink flowers, There are 5 yellow flowers and 7 blue flowers. There are 450 flowers altogether. How many of the flowers are yellow?

There are 150 yellow flowers.

impatient much?

Once is enough, thank you.
Repeated postings will not get faster or better responses.