How much older than your friend are you now

Reference no: EM13512943

A friend of yours who starts out at the same age as you travels to the alpha centauri solar system which is 5.20 light-years away. She returns immediately. She claims that the entire trip took just 7.54 years. How fast did she travel? How much older than your friend are you now?

Reference no: EM13512943

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