Sally is twice as old as her sister Anna, and Anna is ten years younger than her brother Sam. If Sam is 12, how old is Sally and Anna?
Answer: You must find the variable expressions; Sam: x, Anna: x-10, Sally: 2(x-10)
x=12
Sam is 12 years old.
Anna is 2 years old.
Sally is 4 years old
Showing posts with label gedbooks. Show all posts
Showing posts with label gedbooks. Show all posts
Sunday, April 18, 2010
Monday, March 17, 2008
Saturday, January 12, 2008
What is the mode, median, and range of the following numbers?
2.63, 2.01, 2.63, 3.49, 2.45, 2.61
Mode: 2.63
Median: 2.61
Mode: 1.48
Usborne Dictionary of Math (Great for GED!)
More GED Help
2.63, 2.01, 2.63, 3.49, 2.45, 2.61
Mode: 2.63
Median: 2.61
Mode: 1.48
Usborne Dictionary of Math (Great for GED!)
More GED Help
Tuesday, January 01, 2008
GED Skill: Adding and Subtracting Decimals
Adding and subtracting decimals is similar to adding and subtracting whole numbers. However, when you add or subtract decimals, it is important that you line up the decimal points. Once your numbers are lined up properly, you can add or subtract just like you would whole numbers.
Problem: Sally went to the store and purchased a can of soda for 75 cents and a bag of chips for $3.99. She gave the cashier a $10 bill. How much change will Sally get back?
Answer: $00.75 + $3.99 = $4.74
$10.00 - $4.74 = $5.26(change)
Adding and subtracting decimals is similar to adding and subtracting whole numbers. However, when you add or subtract decimals, it is important that you line up the decimal points. Once your numbers are lined up properly, you can add or subtract just like you would whole numbers.
Problem: Sally went to the store and purchased a can of soda for 75 cents and a bag of chips for $3.99. She gave the cashier a $10 bill. How much change will Sally get back?
Answer: $00.75 + $3.99 = $4.74
$10.00 - $4.74 = $5.26(change)
Wednesday, August 01, 2007
GED Skill: Simple Interest
Pamela is taking out a car loan for $12,500 at 6.75% interest for 7 years. How much interest will she pay and how much will her monthly payments be ?
Answer: To find out how much interest Pamela will pay, use the simple interest formula of principal x interest x time: $12,000 x .0675 x 7 = $5670. WOW that's a lot!
To find out how much her monthly payments will be, add the principal and interest ($12,000 + $5670 = $17,670) and divide it by the total months (12 months x 7 years = 84). Finally, divide $17,670 and 84. The monthly payment will be $210.36.
Pamela is taking out a car loan for $12,500 at 6.75% interest for 7 years. How much interest will she pay and how much will her monthly payments be ?
Answer: To find out how much interest Pamela will pay, use the simple interest formula of principal x interest x time: $12,000 x .0675 x 7 = $5670. WOW that's a lot!
To find out how much her monthly payments will be, add the principal and interest ($12,000 + $5670 = $17,670) and divide it by the total months (12 months x 7 years = 84). Finally, divide $17,670 and 84. The monthly payment will be $210.36.
Friday, July 27, 2007
GED Skill: geometry
Dan is planning on on re carpeting his master bedroom, measuring 15ft by 25ft. He is looking at carpeting which costs $9 per square yard. He also has a budget of $300. Assuming that there will be a 10% waste, will Dan have enough money. If not, how much short is he?
Answer: Dan does not have enough money. He is short by about $112.5
Dan is planning on on re carpeting his master bedroom, measuring 15ft by 25ft. He is looking at carpeting which costs $9 per square yard. He also has a budget of $300. Assuming that there will be a 10% waste, will Dan have enough money. If not, how much short is he?
Answer: Dan does not have enough money. He is short by about $112.5
Monday, July 23, 2007
GED Book Sale
I don't usually do this, but this is such a great deal, that I wanted you to know about this GREAT GED sale that I am having. Check out this link to find out about GED books for $5 or less! If you are tutoring students, or you are currently studying for your GED, then this may be the sale for you.
You may wonder why I am reducing inventory. I am getting rid of some of my GED books because I plan on bringing in other GED materials and I need the space!
For a great deal, check out Super Savings on GED Books.
I don't usually do this, but this is such a great deal, that I wanted you to know about this GREAT GED sale that I am having. Check out this link to find out about GED books for $5 or less! If you are tutoring students, or you are currently studying for your GED, then this may be the sale for you.
You may wonder why I am reducing inventory. I am getting rid of some of my GED books because I plan on bringing in other GED materials and I need the space!
For a great deal, check out Super Savings on GED Books.
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