英语奥数题
Twonumbersareintheratio2:3.When4isaddedtoeachnumbertheratiochangesto5:7.thesumofthetw...
Two numbers are in the ratio 2:3.When 4 is added to each number the ratiochanges to 5:7.the sum ofthe two original numbers is ----a.36 b.24 c.40 d.60
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