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I started by getting the fraction of non-red chips:

Chips that are not red: 1/2+1/5+1/6 = 15/20+5/30+6/30 = 24/30

This means that 2/15 chips are red and the question tells us that 12 chips are red.

To get the total # of chips:

1/15 Total = 6 chips
6x15 = 90 Chips total

Choice C

Where/How did you get those fractions 1/2, 1/5, 1/6?
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Jkac1021
I started by getting the fraction of non-red chips:

Chips that are not red: 1/2+1/5+1/6 = 15/20+5/30+6/30 = 24/30

This means that 2/15 chips are red and the question tells us that 12 chips are red.

To get the total # of chips:

1/15 Total = 6 chips
6x15 = 90 Chips total

Choice C

Where/How did you get those fractions 1/2, 1/5, 1/6?


They are in the original problem:

There are chips of four different colors distributed in stacks as follows: 1/2 are white, 1/6 are green, 1/5 are blue, and the remaining 12 chips are red. What is the total number of chips in the four stacks?

A. 60
B. 75
C. 90
D. 100
E. 125
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I started by getting the fraction of non-red chips:

Chips that are not red: 1/2+1/5+1/6 = 15/20+5/30+6/30 = 24/30

This means that 2/15 chips are red and the question tells us that 12 chips are red.

To get the total # of chips:

1/15 Total = 6 chips
6x15 = 90 Chips total

Choice C

Where/How did you get those fractions 1/2, 1/5, 1/6?


They are in the original problem:

There are chips of four different colors distributed in stacks as follows: 1/2 are white, 1/6 are green, 1/5 are blue, and the remaining 12 chips are red. What is the total number of chips in the four stacks?

A. 60
B. 75
C. 90
D. 100
E. 125

lol, yea, they weren't there when I quoted you. The question was probably edited later.

But thanks!!
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Bunuel
There are chips of four different colors distributed in stacks as follows: 1/2 are white, 1/6 are green, 1/5 are blue, and the remaining 12 chips are red. What is the total number of chips in the four stacks?

A. 60
B. 75
C. 90
D. 100
E. 125

If we let n = the total number of chips, we can create the equation:

n/2 + n/6 + n/5 + 12 = n

Multiplying by 30, we have:

15n + 5n + 6n + 360 = 30n

360 = 4n

90 = n

Answer: C
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The equation is x = x/2 + x/6 + x/5 + 12

This can be converted into x = 15x/30 + 5x/30 + 6x/30 + 12

Solve for x and you get x = 90. The answer is (C).
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