Homework Help: math please help!!!!!!!!!!!!!!!!!!!!!

Posted by CeCe 3gr on Tuesday, March 2, 2010 at 6:58pm.

A lady has a certain number of dollar bills in her purse. She has no other money. She spends half the money on a hat and gives $1 to a begger outside the store.She spends half the remaining dollars for lunch and tips the waiter $2. She then spends haif the remaining dollars for a book, and just before she goes home she spends $3 dollars on a hot fudge sundae. She now has $1 left. How many dollars did she began with?

math please help!!!!!!!!!!!!!!!!!!!!! - Ali, Tuesday, March 2, 2010 at 7:22pm
$42
Ali - CeCe 3gr, Tuesday, March 2, 2010 at 7:45pm
Thanks Ali.What did you do?
math please help!!!!!!!!!!!!!!!!!!!!! - Reiny, Tuesday, March 2, 2010 at 8:16pm
Let the original amount be $x

Amount left after first episode
= x/2 - 1

amount left after lunch
= (x/2-1)/2 - 2

amount left after buying book
= [(x/2-1)/2 - 2]/2

amount left after buying fudge
= [(x/2-1)/2 - 2]/2 - 3

then[(x/2-1)/2 - 2]/2 - 3 = 1
[(x/2-1)/2 - 2]/2 = 4
[(x/2-1)/2 - 2] = 8
(x/2-1)/2 = 10
x/2 - 1 = 20
x/2 = 21
x = 42
math please help!!!!!!!!!!!!!!!!!!!!! - julissa, Wednesday, March 3, 2010 at 6:15pm
$6.00

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