Math Word Problems Demystified - A Self Teaching Guide

4 ðxþ 22 Þ¼ 6 ðx
 22 Þ

4 xþ 88 ¼ 6 x
 132

4 x
 6 xþ 88 ¼ 6 x
 6 x
 132


 2 xþ 88 ¼
 132


 2 xþ 88 
 88 ¼
 132 
 88


 2 x¼
 220


 21 x


 21

¼

220

2

x¼110 miles per hour

D¼RT¼ 4 ð 110 þ 22 Þ¼528 miles

146 LESSON 13 Solving Distance Problems