how do I solve this word problem?

Question

A baseball pitcher strikes out an average of 3.6 batter per 9 innings At this rate,how many batters would the pitcher strike out in 315 innings?

Answer 1

batters :     Set up a proportion

innings

 

Let x = the number of batters stroke out in 315 innings

 

3.6  =  x_

 9       315        Cross multiply

 

9x = 1134       Divide both sides by 9

 

 x = 126 batters