A pencil costs $0.27 and a pen costs $0.32. You buy six pencils and the total cost is $4.18. How many pens did you buy?
1 Answer
Mar 19, 2018
No Sales Tax?? (Joke!) The answer is 8 pens
Explanation:
First, let's write the problem statement in an arithmetic form. If we're looking for a combination of pens and pencils, and know the cost of each:
Now, we subtract 1.62 from both sides, effectively moving that number to the Right Hand Side (RHS):
Finally, we divide the whole equation by