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Licemer1 [7]
3 years ago
10

Eve is organizing a race to raise money for a local children's hospital. She makes $20 for each 5K participant and $45 for each

10K participant. Her goal is to raise $9,500.If x represents the number of participants in the 5K race and y represents the number of participants in the 10K race, the linear equation for the given scenario is
Mathematics
1 answer:
lutik1710 [3]3 years ago
7 0

20x + 45y = 9500 is the linear equation for given scenario

<em><u>Solution:</u></em>

Given that Eve makes $20 for each 5K participant and $45 for each 10K participant

Cost of each 5k participant = $ 20

Cost of each 10k participant = $ 45

Her goal is to raise $9,500

Let "x" represents the number of participants in the 5K race

Let "y" represents the number of participants in the 10K race

To find: linear equation for given scenario

The standard form for linear equations in two variables is Ax + By = C

Eve makes $20 for each 5K participant and $45 for each 10K participant and goal is to raise $ 9500

<em><u>From the above statement, we can frame a equation as:</u></em>

number of participants in the 5K race x Cost of each 5k participant + number of participants in the 10K race x Cost of each 10k participant = $ 9500

x \times 20 + y \times 45 = 9500

20x + 45y = 9500

Thus the linear equation for given scenario is found

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Answer:

Step-by-step explanation:

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To calculate how much time it takes to triple an amount, let's substitute $1 in place of PV and $3 in place of FV in the above equation.

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Using some log magic, this formula can also be written as

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Both equations (1) and (2) work fine.

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In order to derive a rule 72 style formula start from equation (1) above. In that formula, we can say that for small values of interest rate,

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Substituting this is equation (1), we get

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