## Prealgebra (7th Edition)

Let $d$ be the speed of the Dodge. The speed of the Camry is $2d$. $d+2d=105$ $\longrightarrow$combine like terms $3d=105$ $\longrightarrow$multiplication property $3d\div3=105\div3$ $\longrightarrow$simplify $d=35$ $2d=2\times35=70$