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?  Pick one:	A) 540	B) 600	C) 660	D) 720	E) 760
Sue planted 4 times as many apple seeds as she planted orange seeds.   Yes, apple:orange be 4:1 but this translates to Apple = 4*Orange and not 4*Apple = Orange   Let Orange be x   Apple = 4*Orange = 4x   0.15Apple + 0.10Orange = 420   =&gt; 0.15*4x + 0.10*x = 420   =&gt; 0.7x = 420   =&gt; x = 600   So, answer will be 600
<result>B</result>
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?