Question

'A bag contains 45 marbles of various colors. Lena draws 48 times, each time replacing the marble before drawing again. She gets a total of 16 red marbles.

Which is best prediction of how many red marbles are in the bag?'

Please explain how to solve the problem, thank you.

Answer 1

mmm
my guess would be you should solve for x for the proportion
\[\frac{ 16 }{ 46 } = \frac{ x }{ 45 }\]

Answer 2

whoops *48 instead of 46 in that fraction, sorry

Answer 3

I think I got the answer: 15?

Answer 4

yep :)

Answer 5

thank you!

Answer 6

you're welcome :)