Sue planted 4 times as many apple seeds as she planted orange seeds. 15 percent of the apple seeds grew into trees, and 10 percent of the orange seeds grew into trees. if a total of 420 apple trees and orange trees grew from the seeds, how many orange seeds did sue plant?

600

Step-by-step explanation:

Given : Sue planted 4 times as many apple seeds as she planted orange seeds. 15 percent of the apple seeds grew into trees, and 10 percent of the orange seeds grew into trees

Let x be the number of apply seeds and y be the number of orange seeds , the we have the following equations:-

          (1)

           (2)

Put x= 4y in (2), we get

Divide both sides by 0.70.

Hence, Sue planted 600 orange seeds.