## Prealgebra (7th Edition)

Let $s$ be the projected number of visitors for Spain. The projected number of visitors for China is 2s. $s+2s=210$ $\longrightarrow$combine like terms $3s=210$ $\longrightarrow$multiplication property $3s\div3=210\div3$ $\longrightarrow$simplify $s=70$ $2s=2\times70=140$