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lubasha [3.4K]
2 years ago
15

The Hu family goes out for lunch, and the price of the meal is $44. The sales tax on the meal is 6%, and the family also leaves

a 15% tip on the pre-tax amount. What is the total cost of the meal?
Mathematics
1 answer:
Afina-wow [57]2 years ago
8 0

Answer:

56.70

Step-by-step explanation:

45x0.06= 2.70

45x0.20=9

45+2.70+9= 56.70

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A concession stand at an athletic event is trying to determine how much to sell cola and iced tea for in order to maximize reven
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Solution :

Demand for cola : 100 – 34x + 5y

Demand for cola : 50 + 3x – 16y

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$R_x=\frac{dR }{dx} = 100-68x+8y$

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$R_y=\frac{dR }{dx} = 50-32x+8y$

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$8x-32y=-50$  .............(ii)

Solving (i) and (ii),

4 x (i)    ⇒       272x - 32y = 400

     (ii)   ⇒   (-<u>)     8x - 32y = -50   </u>

                        264x        = 450

∴   $x=\frac{450}{264}=\frac{75}{44}$

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    R(1.70, 1.99) = $ 134.94

Thus, 1.70 dollars per cola

          1.99 dollars per iced ted to maximize the revenue.

Maximum revenue = $ 134.94

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