News from Mathnasium of Cave Creek
Word Problem Wednesday: Wake Up Call for Elementary School Math Skills
Mar 7, 2018
So dive right in and give it a try! If you get stuck, come give us a quack at Mathnasium of Cave Creek.
Challenge: One farmer sleeps through his alarm clock 3 times every 12 days. Another farmer has a duck that wakes him up 2 out of every 3 days by quacking. Which wakeup method is more effective, the alarm clock or the duck?
...I think Donald Duck would make a more efficient alarm clock...
Answer: The Alarm Clock
Solution: Since the farmer sleeps through his alarm 3 times every 12 days, he wakes up to his alarm clock 9 times every 12 days. So, the alarm clock is successful 9 ÷ 12 = ¾ of the mornings it’s used. The duck wakes up the farmer 2 ÷ 3 = ⅔ of the mornings it quacks. Since ¾ is more than ⅔, the alarm clock is more effective than the duck.