# SOLUTION: sally has 210 marbles some are red some are green there are 10 more green marbles how many red ones does she have

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 Question 611571: sally has 210 marbles some are red some are green there are 10 more green marbles how many red ones does she haveAnswer by stanbon(57410)   (Show Source): You can put this solution on YOUR website!sally has 210 marbles some are red some are green there are 10 more green marbles how many red ones does she have ------- Equations: r + g = 210 g = r + 10 ---- Substitute for "g" and solve for "r": r + r+10 = 210 2r = 200 red = 100 =============== cheers, Stan H. ===========