Chapter 2, Problem 1A

Each group member should select one of the following items: a $50 basketball, an $80 jacket, or a $200 television. Fill in the first three columns of the first three rows of the chart below.

To determine

To fill: The first three columns of the first three rows of the given chart as

Original Price, p	Discount, r	1 – r	Sale Price	Multiplier to convert back to p
p	r	1 – r

When a basketball costs $50, a jacket costs $80 and a television costs $200. The department store gives discount of 20% on all sport goods, 25% on all cloths and 10% on all electronics.

Answer to Problem 1A

Solution:

The filled table is shown below,

Original Price, p	Discount, r	1 – r	Sale Price	Multiplier to convert back to p
$50	0.2	0.8
$80	0.25	0.75
$200	0.1	0.9
p	r	1 – r

Explanation of Solution

Given Information:

A basketball costs $50, a jacket costs $80 and a television costs $200. The department store gives discount of 20% on all sport goods, 25% on all cloths and 10% on all electronics.

Chart is given as:

Original Price, p	Discount, r	1 – r	Sale Price	Multiplier to convert back to p
p	r	1 – r

Each of the three members selects one of the items:

A $50 basketball, an $80 jacket or a $200 television.

Write the object’s original price in the first column.

Find the appropriate discount percentage.

Convert each percentage to decimal and fill in the second column assumed as r,

$\begin{array}{l}20\%=0.2\hfill \\ 25\%=0.25\hfill \\ 10\%=0.1\hfill \end{array}$

Fill the data obtained from the problem in the chart,

Original Price, p	Discount, r	1 – r	Sale Price	Multiplier to convert back to p
$50	0.2	0.8
$80	0.25	0.75
$200	0.1	0.9
p	r	1 – r