Assume you are starting a new business that requires an investment of $20,000 but you could have invested in another endeavor for the same amount with the same risk and received a 25 percent return. You have sacrificed a $5,000 return and this is an cost of using the funds for your new business.

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"we first find value of tax in dollars.

the difference between the two prices   is: 23. 54 - 22 = 1.54

therefore the sales tax in dollars is 1.54

the tax % will be   (amount of tax / original cost price ) × 100

(1.54 / 22) × 100  → (0.07) × 100 =   7

so the tax rate is 7%

we can double check the answer.

7 % of 22   → (7/100) × 22 → 0.07 × 22 = 1.54

22 + 1.54 = 23.54"

answer; is the sum of all individual demands curves;

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