Thursday
August 21, 2014

Homework Help: Algebra

Posted by Mingma Sherpa on Thursday, May 5, 2011 at 6:48pm.

A sack contains yellow marbles and black marbles. If one marble is drawn at random, the probability that it is yellow is 7/8. Six yellow marbles are added to the sack. Now, if one marble is drawn, the probability that it is yellow is 9/10. How many yellow and black marbles were initially in the sack?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Math - There are 150 green marbles and 100 yellow marbles in a bag that contains...
Probabilities - A jar contains 2 red marbles, 3 green marbles, 4 blue marbles, ...
Algebra - A jar contains red, blue and yellow marbles.The number of red marbles ...
algebra - a bag contains 3 green marbles, 2 yellow marbles, and 5 blue marbles. ...
Math - A bag contains 3 red marbles, 5 yellow marbles and 6 orange marbles. ...
Math-Probability - Hello, I'm trying to figure out this probability problem. Can...
Math - One bag contains 5 red marbles, 4 blue marbles, and 3 yellow marbles, and...
Math - Bobby has a bag of marbles with nine red marbles, 13 yellow marbles and ...
algebra2/ Trigonometry - A bag contains 24 green marbles, 22 blue marbles, 14 ...
prealgebra - a bag contains 6 red marbles, 5 yellow marbles, 7 blue marbles, and...

Search
Members