# SOLUTION: ratio of red marbles to blue is 3 to 7. If there are 250 marbles overall, how many are red? Need to show work. I have 3r/7b=x/250, but I don't think that's right. Thank you!

Algebra ->  Algebra  -> Percentage-and-ratio-word-problems -> SOLUTION: ratio of red marbles to blue is 3 to 7. If there are 250 marbles overall, how many are red? Need to show work. I have 3r/7b=x/250, but I don't think that's right. Thank you!       Log On

 Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations! Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

 Word Problems: Problems on percentages, ratios, and fractions Solvers Lessons Answers archive Quiz In Depth

 Click here to see ALL problems on Percentage-and-ratio-word-problems Question 456308: ratio of red marbles to blue is 3 to 7. If there are 250 marbles overall, how many are red? Need to show work. I have 3r/7b=x/250, but I don't think that's right. Thank you! Answer by ptaylor(2052)   (Show Source): You can put this solution on YOUR website!Ok If the ratio of red marbles to blue marbles is 3 to 7, that means that out of every 7+3=10 marbles 3 are red and 7 are blue. In other words, 3/10 are red and 7/10 are blue, soooo if there are 250 marbles, 3/10 are red and 7/10 are blue. 3/10(250)=75 are red and 7/10(250)=175 are blue and the ratio of red to blue is 75/175=3/7 Hope this helps--ptaylor