Answers to Mike's Puzzler
A man went to the hardware store to buy some items. While there the
power went out and the cashier was unable to use the cash register, but was
still checking customers out using a calculator to add up the totals.
The man had 4 items and placed them on the counter. He watched as the
clerk hit the buttons on the calculator and noticed that the clerk was
multiplying the items together instead of adding them. The clerk told
the man his total was $7.11 and the man said that the total was wrong
because he had multiplied the amounts instead of adding them. The
clerk then figured the cost again this time making sure to add the
amounts. The total was again $7.11. The man paid and walked out
wondering if he had been mistaken the first time when he corrected the
clerk. When he got home he found that if the prices were multiplied or
added the total was always $7.11. So, what was the price of each of
the four items?
A farmer has 20 hens that he knows together will hatch 30 eggs every 18
days. If the farmer buys 10 more hens. How long will it take to hatch
the same number of eggs?