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Mathematics 7 Online
OpenStudy (mathmath333):

ques

OpenStudy (mathmath333):

|dw:1456087238171:dw|

OpenStudy (mathmath333):

per (Re)Rupee is equivalent to per Doller

OpenStudy (michele_laino):

ok! I understand

OpenStudy (mathmath333):

thnks

OpenStudy (michele_laino):

If I buy 3000 articles, I spend 100 Rupee so, if I want to get a gain of 20% I have to solve this equation: \[\huge 3000 = 120 \cdot k\]

OpenStudy (mathmath333):

thnks

OpenStudy (michele_laino):

:)

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