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Answer:

15 % are running for a cause.

Step-by-step explanation:

120 out of 800 are running for a cause.

So out of 100,  120 / 8

= 15 are running for a cause.

15 out of a 100 = 15%.

From the fraction solved, 15 participants will be running for a cause.

Since we are given the information that out of the 800 participants in a marathon, 120 are running to raise money for a cause. The fraction that are running for a curse will be:

= 120/800 = 3/20

Therefore, the number of participants from the 100 participants that are running for a cause will be:

= 3/20 × 100 = 15

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