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72+16+2x=100
x=6%
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Bunuel

According to the graph above, what percent of the funds for highway maintenance came from the tax on tires?

(A) 3%
(B) 6%
(C) 8%
(D) 10%
(E) 16%


Attachment:
2018-09-18_1022.png

Since the percents in a pie chart sum to 100, we can create the equation:

x + 12 + x + 4 + 72 = 100

2x = 12

x = 6

Answer: B
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Solution


Given:

• Percent of the funds, for highway maintenance, that came from different sources

To find:

• Percent of the funds, for highway maintenance, that came from the tax on tires

Approach and Working:
    • Sum of all percentages = 100
    • o Implies, 72 + x + 12 + (x + 4) = 100o 2x + 4 = 16
    • Thus, x = 6%

Therefore, the percent of the funds, for highway maintenance, that came from the tax on tires = 6%

Hence, the correct answer is option B.

Answer: B

Hi why have we not taken the % symbol into consideration here? It has been removed from the equation completely.
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