Answer:
Step-by-step explanation:
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Answer:</h2>

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Step-by-step explanation:</h2>
If resistors are in series, so the current
is the same in all of them. In this problem we have four resistors. So, we can get a relationship between the Equivalent resistance of series combination and the four resistors as follows:

is the total resistance
. Moreover:

Therefore:

If you add them all up it would be 6.
The percentage of 15% of 9 is 60% (I think)