I wrote my decision on a piece of paper.
A retail store makes a profit of $3.75 for each $10.00 of goods sold. How much profit would the store make on a $45.00 purchase?
1 answer:
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a = amount invested at 5%
b = amount invested at 2%
now, we know the total invested by Mr Wilson was 20000, so whatever "a" and "b" might be, we know that a + b = 20000.
now, we know the total of earned interest is 550 bucks, so then