Posted by Jenna on Tuesday, January 3, 2012 at 11:29pm.
How can I solve this: Sandy decided to give onefourth of her CDs to Jenn. Then she gives onehalf of the remaining CDs to Bob. If she is left with 6 CDs,how many CDs did she have to begin with?

math  Reiny, Wednesday, January 4, 2012 at 12:12am
let the number she had be x
x  (1/4)x  (1/2)(3/4)x = 6
x  x/4  3x/8 = 6
times 8
8x  2x  3x = 48
3x = 48
x = 16
She had 16 CDs
check:
she had 16, gave 1/4 away
leaving her with 12
she gave 1/2 of those away, so she gave 6 of the remaining 12 away, leaving her with 6
all checks out!
Answer This Question
Related Questions
 math  Sandy decided to give onefourth of her CDs to Jenn. Then she gives one...
 Math  Tell whose CD collection has the greater ratio of rock CDs to total CDs. ...
 math  Julia works at a music store. One of her jobs is to stock new CDs on the ...
 Math  Find the number of each kind of object in the collection Miranda has 24 ...
 Maths  The owner of a music store received a shipment of 1,532 cds the CDs came...
 elementary  nuber sense minnie has 6 county cds and 5 rock cds.amanda has 5 ...
 Math  You have $60.00 in your wallet and want to buy some new CDs. If the CDs ...
 algebra  you buy a storage rack that holds 40 cds. you have 27 cds. write an ...
 Jonh muir  Jen nad 6 blank CDs, but needed to buy more. She bought 2 packs of ...
 algebra  Carmen has 6 CDs that she is going to give away. She let her best ...
More Related Questions