SOLUTION: raul has 6 large marbles and 14 small marbles. one large marble weighs the same as 3 small marbles. if the weight of all 20 marbles is 80 ounces, then the weight of 2 large marbles

Question 938398: raul has 6 large marbles and 14 small marbles. one large marble weighs the same as 3 small marbles. if the weight of all 20 marbles is 80 ounces, then the weight of 2 large marbles plus 4 small marbles is how many ounces.
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi

Let x represent the weight of a small marble

L = 

6(3x) + 14x = 80oz

32x = 80oz

x = 80/32 = 10/4 oz, the weight of a small marble

...

2(30/4) + 4(10/4) = 25oz



 

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