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igomit [66]
2 years ago
15

A shopkeeper gains #1.75 by selling an article for #6.25. what is the percentage gain.​

Mathematics
1 answer:
Sveta_85 [38]2 years ago
3 0

Answer:

  • ≈ 38.89%

Step-by-step explanation:

<u>The cost is:</u>

  • 6.25 - 1.75 = 4.50

<u>Percentage gain:</u>

  • 1.75/4.50*100% ≈ 38.89%
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Step-by-step explanation:

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\frac{dA}{dt} = kA

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A = Ce^{kt}

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1000000 = Ce^{0}

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1000000 = C

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ln(0.5) = ln(e^{k*6})

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Solve for k

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k = \frac{-0.693}{6}

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\frac{dA}{dt} = kA

Where

\frac{dA}{dt} = Rate

So, when

A = 600000

The rate is:

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