Answer:
420.05$. He gained.
Step-by-step explanation:
1800$*500=9000$
17.12$*500=8560$
and he had to pay 19.95$ for transaction.
so,the amount he gained is 9000$-8560$-19.95$
=420.05$
Hi
assuming he bought and sales all in the same order we have :
500x18 - 500x17.12 - 2* 19.95 =
I let you do math.
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