Question 1

Which general proportion can be used in percent change problems?

Accepted Answer

$\frac{\%~change}{100} = \frac{amount~of~change}{original~amount}$

Answer

$\frac{original~amount}{amount~of~change} = \frac{\%~change}{100}$

Answer

$\frac{amount~of~change}{100} = \frac{\%~change}{orignial~amount}$

Answer

$\frac{\%~change}{100} = \frac{amount~of~change}{new~amount}$

Question 2

How do you find the amount of change in a percent change problem?

Accepted Answer

$|new~amount - original~amount|$

Answer

$|100 - new~amount|$

Answer

$|100 - original~amount|$

Question 3

Theo bought a brand new video game for 60 dollars.  When he finally beat it, he wanted to sell it to Game Players Unlimited.  The store was only going to give him 25 dollars for the game.  What is the amount of change?

Accepted Answer

decrease of $35

Answer

decrease of $45

Answer

increase of $35

Answer

increase of $45

Question 4

Theo bought a brand new video game for 60 dollars.  When he finally beat it, he wanted to sell it to Game Players Unlimited.  The store was only going to give him 25 dollars for the game.  Which proportion could be used to find the percent decrease?

Accepted Answer

$\frac{x}{100} = \frac{35}{60}$

Answer

$\frac{x}{100} = \frac{25}{60}$

Answer

$\frac{35}{100} = \frac{x}{25}$

Answer

$\frac{60}{100} = \frac{x}{35}$

Question 5

Theo bought a brand new video game for 60 dollars.  When he finally beat it, he wanted to sell it to Game Players Unlimited.  The store was only going to give him 25 dollars for the game.  What is the percent decrease?

Accepted Answer

Around 58% decrease

Answer

Around 25% decrease

Answer

Around 35% decrease

Answer

Around 62% decrease

Question 6

During the first marking period, Trevor had a 80 average.  During the second marking period, he had a 70 average.   Which proportion could Trevor use to find his percent decrease?

Accepted Answer

$\frac{10}{80} = \frac{x}{100}$

Answer

$\frac{10}{70} = \frac{x}{100}$

Answer

$\frac{80}{100} = \frac{x}{10}$

Answer

$\frac{70}{80} = \frac{x}{100}$

Question 7

Lisa was making $10/hr last year.  This year she is making $11.50/hr.  By what percent did her pay per hour increase?

Accepted Answer

15%

Answer

1.5%

Answer

115%

Answer

11.5%

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