SOLUTION: A bowl contains red marbles and green marbles. Sue knows there are 150 red marbles. After mixing the marbles, she randomly selects 50 marbles, 15 of which are red. Approximately ho
Algebra ->
Customizable Word Problem Solvers
-> Misc
-> SOLUTION: A bowl contains red marbles and green marbles. Sue knows there are 150 red marbles. After mixing the marbles, she randomly selects 50 marbles, 15 of which are red. Approximately ho
Log On
Question 966349: A bowl contains red marbles and green marbles. Sue knows there are 150 red marbles. After mixing the marbles, she randomly selects 50 marbles, 15 of which are red. Approximately how many total marbles are in the bowl?
Thanks for reading! Answer by ramkikk66(644) (Show Source):
You can put this solution on YOUR website! A bowl contains red marbles and green marbles. Sue knows there are 150 red marbles. After mixing the marbles, she randomly selects 50 marbles, 15 of which are red. Approximately how many total marbles are in the bowl?
Assuming that the ratio of red to green marbles is the same in the sample selected (50) as in the bowl.
In the sample, 15 out of 50 are red. i.e. fraction of red marbles =
Totally there are 150 red marbles. If this is also 3/10 of the total marbles in the bowl, and assuming total marbles are x, we get an equation
So there are approximately marbles in the bowl.
Hope this helps.
(