To raise funds for uniforms and travel expenses, the soccer team is holding a car wash in a part of town with a lot of car and truck traffic. The team spent
$90 on supplies like sponges and soap. They plan to charge $10 per car and
$20 per truck. Their goal is to raise $460.
How many cars do they have to wash if they washed the following numbers of
trucks? (Hint)
Answer ?