Sept 2011

Hardware Store
Q: A woman goes into a hardware store to buy something for her house. When asked the price, the clerk replies, "the price of one is twelve cents, the price of forty-four is twenty-four cents, and the price a hundred and forty-four is thirty-six cents. What does the woman want to buy?

A: Numbers for outside her house

          Oct 2011

Lunch

Q.2 fathers and 2 sons go to lunch at a cost of $7 per person. Altogether, they only pay $21. Why?

A: 1 of the sons is also a father

Nov 2011

Food Barn

Q: The Food Barn sells candy bars at a price of 5 for $1. Margaret bought $12 worth of candy bars there and resold half of them at a price of 3 for $1 and half at a price of 2 for $1. How much profit did she make (assuming her labor costs are zero)?

A: $13. She bought 60 candy bars for $12. Her revenue on the 30 candy bars she sold at 3/$1 is $10; her revenue on the 30 she sold at 2/$1 is $15. Total revenue less total cost is $25 - $12, or $13.

 

          Jan 2012

          A: 4.8 miles per hour. 5 is incorrect. Take any distance (say 12 miles there and 12 miles back). They take two hours to cover the first 12 miles and three

          hours to cover the return trip. In 5 hours, they covered 24 miles which is an overall average of 4.8 miles per hour.