This preview shows page 1. Sign up to view the full content.
Unformatted text preview: p= 78.50
1.15 The store paid $68.26 for the calculator. Note that since we are dealing with money we rounded
the answer down to two decimal places. Example 4 A shirt is on sale for $15.00 and has been marked down 35%. How much was the
shirt being sold for before the sale?
This problem is pretty much the opposite of the previous example. Let’s start with defining p to
be the price of the shirt before the sale. It has been marked down by 35%. This means that 0.35p
has been subtracted off from the original price. Therefore, the equation (and solution) is, p - 0.35 p = 15.00
0.65 p = 15.00
0.65 So, with rounding it looks like the shirt was originally sold for $23.08.
These are some of the standard problems that most people think about when they think about
Algebra word problems. The standard formula that we will be using here is Distance = Rate ´ Time
All of the problems that we’ll be doing in this set of examples will use this to one degree or
another and oft...
View Full Document
- Spring '12