A van travels 190 miles on 10 gallons of gas. Write and solve an equation to find how many gallons the van needs to travel 380 miles.

Set up a proportion.

190x = 3800 {cross-multiplied}

x = 20 {divided each side by 190}

**190 miles / 10 gallons = 380 miles / x gallons**190x = 3800 {cross-multiplied}

x = 20 {divided each side by 190}

**The van needs 20 gallons.****Ask the House**