Sal solves the following age word problem:ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½William is 4 times as old as Ben. 12 years ago, William was 7 times as old as Ben. How old is Ben now?
Age word problems is a free educational video by Khan Academy.It helps students in grades 8 practice the following standards 8.EE.C.8.
1. 8.EE.C.8 : Analyze and solve pairs of simultaneous linear equations..