Homework Help: math

Posted by Mai on Tuesday, March 29, 2011 at 10:40am.

There are fifty marbles in a
sack: red, blue and green.
There are ten more green
than blue marbles in the
sack. The probability of
drawing a red or blue marble
is one-half. Write and solve
an equation to determine
how many of each color
marble is in the sack

math - MathMate, Tuesday, March 29, 2011 at 11:03am
"The probability of
drawing a red or blue marble
is one-half."
Means that Red+Blue=half * 50 = 25.

Can you do the rest?
math - Mai, Tuesday, March 29, 2011 at 11:14am
i don't know if i can do it...
math - MathMate, Tuesday, March 29, 2011 at 11:25am
Known facts:
Red+Blue+Green=50
Red+Blue=25
Green-Blue=10

Can you juggle a little with the above equations to come up with the answer?
math - Katie, Tuesday, March 29, 2011 at 11:32am
so there be 25 green, 15 blue, 10 red???
math :) - MathMate, Tuesday, March 29, 2011 at 11:52am
Correct, good job!

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