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July 6, 2015

Homework Help: Ratio and Proportions

Posted by Dottie on Thursday, September 20, 2012 at 9:49am.

Salina had some local and foreign stamps. The ratio of the number of local stamps to the number of foreign stamps was 3:4. She bought 21 more local stamps and the ratio became 9:8.

a. How many foreign stamps did Salina have?

b. How many local stamps did Salina have in the end?

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