Answer :

reinhard10158

Step-by-step explanation:

for any question about %, first establish what is 100% or 1%.

out of this you can find any answer.

so, what is 100% here ?

the total income : $315,500 = 100%

1% = 100%/100 = 315,500/100 = $3,155

how many % are $18,316.40 ?

well, as many % as times 1% fits into that amount :

18,316.40 / 3,155 = 5.805515055... ≈ 5.81%

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