Need some more help!! I have a few more coming too ​

Abag of jelly beans contain 13 pink, green, 20 yellow, 10 black, 7 red, and 11 orange jelly beans. approximately what percent of the jelly beans are pink and yellow?

Can you me find the missing length. i attached an image.

Find the nonpermissible replacement for binthis expression. b2/5b +5