How many 2/3 -ounce packages of peanuts can be made with 8 ounces of peanuts? Explain how you found your answer.
1 answer:
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He invested "a" at 3% and "b" at 5%
now, he invested 100 more in "b", so, whatever "a" may be, b = a + 100
now, how much is the interest yield of each? well
how much is 3% of a? well, (3/100) * a, or 0.03a
and 5% of b? well (5/100) * b, or 0.05b
now, we know the total yield was 53 bucks, thus 0.03a + 0.05b = 53
thus
solve for "a", to see how much was invested at 3%
what about "b"? well, b = a + 100
now, he invested 100 more in "b", so, whatever "a" may be, b = a + 100
now, how much is the interest yield of each? well
how much is 3% of a? well, (3/100) * a, or 0.03a
and 5% of b? well (5/100) * b, or 0.05b
now, we know the total yield was 53 bucks, thus 0.03a + 0.05b = 53
thus
solve for "a", to see how much was invested at 3%
what about "b"? well, b = a + 100