### Problem of the Week, 9/17/10: “Flying Flora”

Flying Flora, late as usual for her business meeting, speeds from Santa Fe to Las Cruces at 105 mph.

After arriving in Las Cruces, she gets an email alerting her that she was caught by a radar gun and received a speeding ticket (she knows the local DA; otherwise she would have been thrown in jail!). Much chastened, Flora drives back from Las Cruces to Santa Fe at just 60 mph.

Your task: Without using a specific value for the distance between the towns, find Flying Flora’s average rate for the round trip. Please show your work and round off your answer to the nearest tenth of a mile per hour. Post your answers on Facebook, or send to: josh@SingingTurtle.com All entries must be received by 10 p.m. this Wednesday, Sept. 22, to qualify for getting your name posted among the five first to get it right, on Friday.