Posted by widyan on Friday, January 20, 2012 at 10:38pm.
Timothy had a total of 238 blue and red marbles. He gave 3/7 of the blue marbles and 5/8 of the red marbles away. Altogether, Timothy gave away 124 marbles.How many red marbles did Timothy give away? (Skill: Equations)

math (please help)  Reiny, Friday, January 20, 2012 at 10:55pm
number of blues  x
number of reds  238x
(3/7)x + (5/8)(238x) = 124
solve for x
(I suggest multiplying each of the 3 terms by 56 , the LCD )