Question 92432: I'd really appreciate your input on this problem.
Tom and David both collected a total of 480 marbles. Tom stacked each column with 6 marbles. and David stacked each column with 9 marbles. They stacked 72 columns together. Write an equation using this information.
Well, i came up with 56 columns for Tom; and 16 columns for David which equal 72 together. Tom collected 56columns x 6marbles=336
David collected 16columns x 9marbles=144
Tom plus David=480marbles. But, how do i write an equation for these numbers?? Answer by scott8148(6628) (Show Source):