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?
1.4 trucks
2. 15 trucks
3.21 trucks
4. 27 trucks
5. t trucks