Posted by **desperate!** on Wednesday, February 24, 2010 at 11:04pm.

You have a bag with 60 black jelly beans and 240 red ones.

a) If you draw one jelly bean out of the bag, find the probability that it is black.

-------60/300= 1/5

b) If you add 60 black jelly beans to the original bag and draw out a bean, what is the probability that it is black?

-------120/360= 1/3

c) How many black beans do you need to add to the original bag to double the original probability of drawing a black bean?

d) Write an equation that represents the problem in part (c).

I GOT A AND B JUST NEED C AND D PLEASE?(:

## Answer This Question

## Related Questions

- math again - You have a bag with 60 black jelly beans and 240 red ones. a) If ...
- Math - A box has 8 blue and 5 green jelly beans. A bag has 6 blue and 8 green ...
- math - one bag of jelly beans contains 14 red jelly beans. how many red jelly ...
- Math - In a bag of red and black jellybeans 136 are red jb and the remaining r ...
- math - mr. lee had a bag of red beans and a bag of black beans. 20% of the total...
- Math - Assume a box contains three red jelly beans and two green ones. We ...
- statistics - Four jelly beans are selected, one at a time from a bowl containing...
- Probability - A jar contains four red, four yellow, and three green jelly beans...
- Probability - Four red and seven black beans are placed into a bag. If one of ...
- math - if jay eats 1/3 of jelly beans and jack 1/4 of the jelly bean leveing ...

More Related Questions