Sara and Joe have a combined height of 120 inches. Joe is 6 inches more than double Sara's height. How tall is Joe?
Let x be Sara's height in inches.
Joe is 6+2x inches tall
120=x+(6+2x)
120=3x+6
114=3x
x=
<gadget id="calculator">38</gadget>
<output>38</output>
38 inches.
Joe is 6+2(38)=82 inches.

<result>82</result>