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July 15th, 2015, 03:41 PM   #1
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Post I need help with an approximation question



As you can see, I got the problem wrong.
What I don't understand is the explanation. Where did 1.04 and 1.06 and 0.9 come from, I just want to be able to understand what is necessary to do with a problem like this.

Thanks in advance.
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July 15th, 2015, 04:17 PM   #2
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An increase of four percent is 104% * original value. 104% = 1.04.
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July 15th, 2015, 09:05 PM   #3
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Originally Posted by greg1313 View Post
An increase of four percent is 104% * original value. 104% = 1.04.
And I guess the same with 9% increasing to 90% making it 0.9. Awesome, thank you so much!
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July 16th, 2015, 04:30 AM   #4
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NO. An "increase of 9%" is a change to 109% or 1.09. A decrease by 10% would be 100- 10= 90% or 0.90.

(I consider that a very confused question. They say "three transactions" but do not say that they were consecutive in the given order with the entire amount rather than three simultaneous transactions with part of the 20000. Also they start saying "you make three transactions" but end asking "what is the value of his money"!)
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