Every month we will give you a math/statistics brain teaser that lets you test your
knowledge with a fun problem.
This Month's Challenge: Bikes!
Scott wants to buy a bike that costs $165. He has already saved $120. He earns $9
each hour working as a lifeguard and saves all of it for the bike.
How many more hours does Scott need to work in order to have enough money to buy
Click here for answer!
Step 1: Find how much more Scott needs to save.
Find the difference between the cost of the bike and how much he has saved so far.
$165–$120=$45 The difference is $45.
Scott still needs to save $45 more before he can buy the bike.
Step 2: Find how many hours of work it will take to save $45.
Divide the amount of money Scott needs to save by the amount he earns each hour.
It will take Scott 5 hours working as a lifeguard to save up for the bike.
Many of the ideas in these Teasers come from thoughts formed by some of the great
mathematical/statistical geniuses in history. To learn more about them and to take
a fun quiz to find out which famous mathematician through history most interests
you, try our Mathematicians' Quiz.
Or if you'd like more Math/Science fun you might want to try...
Now with both 4th and 8th grade level questions!