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OpenStudy (anonymous):
stamp collection consisted of 120 stamps in October. In March, her collection grew to 138 stamps. Find the percent increase between October and March.
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OpenStudy (anonymous):
thank you :)
OpenStudy (anonymous):
no, it's 15 percent
OpenStudy (lilg132):
oops sorry
OpenStudy (anonymous):
thank you
OpenStudy (anonymous):
120 ---- 100% 138 ---- x% x= 130*100/120=115 115% - 100 % = 15%
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