Traci consumes two goods, lemonade and pretzels. Lemonade costs $1 per glass, and she consumes it to the point where the marginal utility she receives from her last glass of lemonade is 3. Pretzels cost $2 per bag. The relationship between the marginal utility Traci gets from eating a bag of pretzels and the number of bags she eats per month is as follows: Bags of pretzels 1 2 3 4 5 6 Marginal utility 30 20 12 6 2 0 If Traci is maximizing his utility, how much does she spend on pretzels each month

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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"