They earned $30 from trucks because 5 x 6 = <<5*6=30>>30

They earned $35 from SUVs because 5 x 7 = <<5*7=35>>35

They earned $35 from cars because 100 - 35 - 30 = <<100-35-30=35>>35

They washed 7 cars because 35 / 5 = <<35/5=7>>7

# Answer

7
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Laura is hosting a carwash. She will charge $5 for a car, $6 for a truck, and $7 for an SUV. They raised $100 in total. If they washed 5 SUVs and 5 trucks, how many cars did they wash?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
7
Laura is hosting a carwash. She will charge $5 for a car, $6 for a truck, and $7 for an SUV. They raised $100 in total. If they washed 5 SUVs and 5 trucks, how many cars did they wash?
train