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Heather has divided ​$6900 between two​ investments, one paying ​9%, and the other paying 6​%. If the return on her investment is ​$​513, how much does she have in each​ investment? Do not try to solve each problem algebraically.​ Instead, make a guess that satisfies one or more conditions of the problem and then evaluate your guess. Keep adjusting your guesses until you have a solution that fits all the conditions of the problem.

Sagot :

Heather needs to invest $3,300 in first investment and $3,900 in the second investment in order to earn a return of $513

What proportion of investments in each should we start with?

Best guess implies that we first of all try $3,000 in the first investment and the remaining $3,900 in the second investment, such that we increase the amount in the first investment with $150 each time

However, we need to derive the total return formula first and foremost, remember algebraic solution is not required

Total return=(first investment*9%)+(second investment*6%)

$3,000 and $3,900:

Total return=(9%*$3000)+(6%*$3900)

Total return=$504

$3,150 and $3,750

Total return=(9%*$3150)+(6%*$3750)

Total return=$508.50

$3,300 and $3,600:

Total return=(9%($3300)+(6%*$3600)

total return=$513

Find an algebraic approach on:https://brainly.com/question/28410187

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