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Homework Help: Math for Steve or someone good at math

Posted by Jman on Thursday, November 8, 2012 at 2:05pm.

1. Find the percent of change when the price of a radio changes from $40.00 to $44.00.

a. 12%
b. 10%
c. 36.4%
d. 40%

2. Find the percent of change when the price of an oven changes from $450 to $396.

a. 15%
b. 14%
c. 13%
d. 12%

3. The top player’s scoring average changes from 20 points per game to 24 points per game.

a. 20% increase
b. 25% decrease
c. 16.7% increase
d. 4% increase

4. At the start of the football season, Jorge weighed 150 pounds. At the end of the season, he weighed 138 pounds. What was the percent change in his weight?

a. 10%
b. 12%
c. 8.7%
d. 8%

5. Sara raised her raw score on a math test from 40 to 60. What was the percent change in Sara's score?

a. 10%
b. 20%
c. 40%
d. 50%

• Math for Steve or someone good at math - Jman, Thursday, November 8, 2012 at 2:16pm

  Please check my answers.
  
  1. b
  2. a
  3. c
  4. b
  5. d
  
  If i got any wrong please tell me the right ones.
  

• Math for Steve - Jman, Thursday, November 8, 2012 at 2:21pm

  Please help me.
  

• Math for Steve or someone good at math - Ms. Sue, Thursday, November 8, 2012 at 2:23pm

  1 and 5 are correct. 2, 3, and 4 are wrong.
  

• Math for Steve or someone good at math - Jman, Thursday, November 8, 2012 at 2:25pm

  What are 2, 3, and 4?
  

• Math for Steve or someone good at math - Steve, Thursday, November 8, 2012 at 2:26pm

  remember: % change is calculated using the original amount
  
  #1 b OK
  
  #2 d because
  the change is 54
  54/450 = 12%
  
  #3 a because
  the change is 4
  4/20 = 1/5 = 20%
  
  #4 d because
  the change is 12
  12/150 = 8%
  
  #5 OK
  
  odd how you got some right and some wrong. They are all done the same way.
  

• Math for Steve or someone good at math - Ms. Sue, Thursday, November 8, 2012 at 2:27pm

  Go back and study your text materials and try again. You won't learn how to do these problems if I give you the answers.
  

• Math for Steve or someone good at math - Jman, Thursday, November 8, 2012 at 2:28pm

  Thanks Ms. Sue and Steve. You guys are really nice, taking the time to help kids with their work.
  

• Math for Steve or someone good at math - Jman, Thursday, November 8, 2012 at 2:29pm

  I think I understand it now.
  

• Math for Steve or someone good at math - Ms. Sue, Thursday, November 8, 2012 at 2:30pm

  You're welcome.
  

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