Today's Question - Are we there yet? On a late vacation trip Mitch tried to keep little Evan quiet by suggesting that Evan count all the oncoming busses. Evan did better. He noted that an oncoming bus passed them every 10 minutes. "Dad," he asked, "If a bus passes us every 10 minutes, how many busses arrive at our town bus station each hour?" "That's math, son. If there are 60 minutes in an hour about 6 busses must arrive." Skip the Ozzie and Harriet - is Mitch correct?

Reveal Answer Answer - Sssh! Are the kids outside the room? Well....dad was wrong. The 10 minute interval included not only the speed of the bus but Mitch's speed too. Assuming a constant (but not necessarily equal) speed by both parties, the busses passed a lamp-post every 20 minutes. Thus, 3 per hour!

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