document.write( "Question 182649: This is from a worksheet. Mathematics Essentials Grade 8 week 18 pg 52.
\n" ); document.write( "I think I've got the right answer, but I don't know how to put it into an equation. That is the part I need help with. Here is the problem:
\n" ); document.write( "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.
\n" ); document.write( "I figured the answer would be: blue 15, red 10 and green 25. Can you help me determine the equation? And is the answer right?
\n" ); document.write( "

Algebra.Com's Answer #137118 by Mathtut(3670)\"\" \"About 
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I think I've got the right answer, but I don't know how to put it into an equation. That is the part I need help with. Here is the problem:
\n" ); document.write( "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.
\n" ); document.write( "I figured the answer would be: blue 15, red 10 and green 25. Can you help me determine the equation?
\n" ); document.write( ":
\n" ); document.write( "let the number of red,blue,and green marbles be r,b,and g consecutively
\n" ); document.write( ":
\n" ); document.write( "g=b+10..........eq 1
\n" ); document.write( "r+b=25..........eq 2---->r=25-b
\n" ); document.write( "r+b+g=50........eq 3
\n" ); document.write( ":
\n" ); document.write( "take r+b's value of 25 from eq 2 and g's value of b+10 from eq 1 and plug those values into eq 3
\n" ); document.write( ":
\n" ); document.write( "25+b+10=50
\n" ); document.write( ":
\n" ); document.write( "\"highlight%28b=15%29\"number of blue marbles
\n" ); document.write( ":
\n" ); document.write( "\"highlight%28r=25-b=25-15=10%29\"number of red marbles
\n" ); document.write( ":
\n" ); document.write( "\"highlight%28g=b%2B10=15%2B10=25%29\"number of green marbles
\n" ); document.write( "
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