Primary Mathematics

Example of modeling

Question :
A CD player costs 5 times as much as a pen. If the CD player costs $144 more than the pen, what is the cost of the CD player

CD player __________________
* * * * *
<--------$144 ---------->

Pen _____
* *

4 units = $144
1 unit = $144 /4 = $36
5 units = 5 X $36 = $180

posted by Blogs @ 6:14 AM