percent increase - XP Math - Forums

 XP Math - Forums percent increase
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 11-29-2005 #1 Johanni   Join Date: Sep 2005 Posts: 5 percent increase The first light bulb was made in 1834. In 1834 the light first lightbulb cost 0.05. But now in 2005 the light bulbs cost about \$7.00. Find the percent increase of the light bulb.
 12-02-2005 #2 Beatrice     Join Date: Sep 2005 Posts: 10 Bea's Reply \$7.00- \$0.05= \$6.95 0.05^ 6.95= a 139% increase

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