A drawer has some red, green, and blue marbles. There are 33 marbles in total. There are 4 times as many red marbles as green marbles. There are half as many blue marbles as green marbles.
How many blue marbles are in the drawer?
Answer (3)
The number of blue marbles be 3. ;
g − g ree n ma r b l es r − re d ma r b l es b − b l u e ma r b l es g + r + b = 33 4 g − re d ma r b l es 2 1 g − b l u e ma r b l es g + 4 g + 2 1 g = 33 5 2 1 g = 33 2 11 g = 33 / ⋅ 11 2 g = 3 A n s w er : b = 2 1 g → b = 2 1 ⋅ 6 = 3
The number of blue marbles in the drawer is 3. This is determined by solving the given relationships between the red, green, and blue marbles, which total 33. By defining variables and setting up an equation, we find that there are 6 green marbles and subsequently 3 blue marbles.
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