 |
| ||
| |||
|
| Math Central | Quandaries & Queries |
|
Question from Heather: My granddaughter had this third grade math problem. Aaron is 4 times as old as his brother Bill. In ten years Aaron will be twice Bills age. What are their ages? |
Suppose Aaron is $A$ years old and Bill is $B$ years old. Since Aaron is 4 times as old as Bill
\[A = 4 \times B.\]
In 10 years how old will Aaron be? How old will Bill be? At this time Aaron will be twice as old as Bill. This gives you a second equation in $A$ and $B.$ Can you solve the pair of equations for $B?$
Make sure you verify your answer.
Write back if you need more assistance,
Penny
| ||
| ||
| ||
 |
 |
|
Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.