Answer:
First Bed: 15 white 20 pink
Second Bed: 30 white and 60 pink= 90 hydrangeas
Total Flowers: 45 white and 80 pink
Explanation:
Questions like these are normally jsut trial and error. If the numbers that are given to you end with a 5 or 0, you should experiment with numbers that end in a 5 or 0.