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 By: tchtby (offline)  Friday, September 20 2013 @ 04:05 AM CDT (Read 730 times)
tchtby

Petunia saved some money in August and September.
For every \$2 she saved in August, her mother gave her \$1.
Petunia had a total of \$585 at the end of two months.
This was an increase of 30% of what she would have saved on her own.
How much did she save in September?

Newbie

Registered: 10/15/12
Posts: 13

 By: verachen (offline)  Friday, September 20 2013 @ 08:42 AM CDT
verachen

I'm not really that sure , but this is my working . I do not know if its 100% correct ><

\$585 / 130% = \$4.50 ( 1% )
\$4.50 x 100% = \$450 ( what she would have saved without her mother giving her any \$ )
\$4.50 x 30% = \$135 ( what her mother gave her )
\$135 / \$1 = 135 ( she saved 135 times of \$2 )
\$2 x 135 = \$270 ( saved in Aug herself )
\$270 + \$135 = \$405 ( total in Aug )
\$585 - \$405 = \$180 ( Sep )

Ans : \$180

Junior

Registered: 05/07/10
Posts: 15

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