SOLUTION: A bag contains 45 marbles, all of which have at least one dot painted on them. The dots are either green or blue. If 30 marbles have a green dot pained on them and 25 marbles have

Algebra ->  Probability-and-statistics -> SOLUTION: A bag contains 45 marbles, all of which have at least one dot painted on them. The dots are either green or blue. If 30 marbles have a green dot pained on them and 25 marbles have      Log On


   



Question 1038018: A bag contains 45 marbles, all of which have at least one dot painted on them. The dots are either green or blue.
If 30 marbles have a green dot pained on them and 25 marbles have a blue dot painted on them, at least how many marbles have both blue and green dots?

Answer by jorel555(1290) About Me  (Show Source):
You can put this solution on YOUR website!
If 30 marbles have a green dot painted on them, them 15 of them DON'T. Similarly, 25 marbles with blue dots leaves 20 marbles without. 20+15=35; 45-35=10 marbles with both blue and green dots!!!!!!!!!