Algebra in 3 minutes

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Comment to: lawrence@carol.net

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© David Lawrence 2000

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Learn the basics of Algebra in 3 minutes
See if you can folow the question below and how we deal with it.


Question 8:

Here's something slightly different. It comes from a Day Calendar entitled '365 Brain Puzzles' by Dr. Abbie F. Salny.

Jennifer went shopping for birthday presents.
She spent half of what she had, plus $5, for a blouse;
then half of what was left, plus $5, for a cookbook;
then half of what was left, plus $5, for stationery.
Jennifer had nothing left. How much money did she start with?
and what was the cost of each purchase?

If you got confused with all the text you could make a rough sketch or chart. This may help you to see it clearer.

Tip: Let 'x' equal the total money Jennifer spent.

The equation can be:

'x' = Cost of the blouse + Cost of the cookbook + Cost of the stationery

 

If you really don't know how to start click here for help.

 

Click on the answer below you believe is the correct one

Answer to question 8:

'A' - $70

'B' - $80

'C' - $90

'D' - $93.67


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