moving question

Karen got a remote control car for her birthday. It is metallic purple with chrome wheels that are 1 1/2 inches in diameter. She said to her friend Dylan, "my remote control car goes faster than my Mom's car on the freeway." "no way," said Dylan. Karen  said. " I will prove it to you."

Karen measured off a distance of 115 inches. Dylan said, "okay, I will time how long it takes your car to travel that distance. I have a stop watch feature on my watch." Karen raced her remote control car over the 115 inch distance. Dylan said, "wow, that only took 3.21 seconds. That seems really fast." "See, I told you," said Karen. "But really how fast is it going?" asked Dylan.

DETERMINE THE SPEED OF KAREN'S REMOTE CONTROL CAR AND COMPARE ITS SPEED TO THAT OF A REGURLAR CAR TRAVELING ON THE FREEWAY. EPLAIN HOW YOU FOUND YOUR SOLUTION