# A bakery owner offered a 20% discount on a dozen cupcakes. The amount of the discount is 4.25$. What is the regular price of a dozen cupcakes? Question Upper Level Math asked 2020-11-08 A bakery owner offered a 20% discount on a dozen cupcakes. The amount of the discount is 4.25$.
What is the regular price of a dozen cupcakes?

2020-11-09
Step 1
Given:
Rate of discount on dozen cupcakes, r = 20%
Amount of discount = 4.25$Step 2 Let the regular price of a dozen cupcakes =$x
so,
$$\displaystyle\Rightarrow{x}\times\frac{{20}}{{100}}={4.25}$$
$$\displaystyle\Rightarrow{x}\frac{{{4.25}\times{100}}}{{20}}$$
$$\displaystyle\Rightarrow{x}=\{21.25}$$

### Relevant Questions

The owner of a sporting goods store buys pairs of rollerblades for $60 and marks them up 25%. Several months later, he decides o clear his inventory and sells each pair or rollerblades at a discount of 20%. What is the total price of a pair of these rollerblades with the discount and a 6% sales tax? asked 2020-11-08 The regular price of a computer is x dollars. Let f(x) = x - 400 and g(x) = 0.75x. Solve, a. Describe what the functions f and g model in terms of the price of the computer. b. Find $$\displaystyle{\left({f}\circ{g}\right)}{\left({x}\right)}$$ and describe what this models in terms of the price of the computer. c. Repeat part (b) for $$\displaystyle{\left({g}\circ{f}\right)}{\left({x}\right)}$$. d. Which composite function models the greater discount on the computer, $$\displaystyle{f}\circ{g}$$ or $$\displaystyle{g}\circ{f}$$? asked 2021-03-12 In one Tech region the number of students in Math 136 is 20% more than the number of students in Math 123. If there are 480 students in Maths 136, how many students are in Math 123? asked 2021-03-08 $$\displaystyle{\left({x}^{{4}}{y}^{{5}}\right)}^{{\frac{{1}}{{4}}}}{\left({x}^{{8}}{y}^{{5}}\right)}^{{\frac{{1}}{{5}}}}={x}^{{\frac{{j}}{{5}}}}{y}^{{\frac{{k}}{{4}}}}$$ In the equation above, j and k are constants. If the equation is true for all positive real values of x and y, what is the value of j - k? A)3 B)4 C)5 D)6 asked 2021-01-02 The rate of change of the volume of a snowball that is melting is proportional to the surface area of the snowball. Suppose the snowball is perfectly spherical. Then the volume (in centimeters cubed) of a ball of radius r centimeters is $$\displaystyle\frac{{4}}{{3}}\pi{r}^{{3}}$$. The surface area is $$\displaystyle{4}\pi{r}^{{2}}$$.Set up the differential equation for how r is changing. Then, suppose that at time t = 0 minutes, the radius is 10 centimeters. After 5 minutes, the radius is 8 centimeters. At what time t will the snowball be completely melted. asked 2020-11-14 What is the future of$2200 invested for nine months at 4.25% compounded semiannually?
Select one:
a:$2270 b:$2341.73
c:$2234>97 d:$2269.76
A bipolar alkaline water electrolyzer stack module comprises 160 electrolytic cells that have an effective cell area of $$\displaystyle{2}{m}^{{2}}$$. At nominal operation, the current density for a single cell of the electrolyzer stack is 0.40 $$\displaystyle\frac{{A}}{{c}}{m}^{{2}}$$. The nominal operating temperature of the water electrolyzer stack is $$\displaystyle{70}^{\circ}$$ C and pressure 1 bar. The voltage over a single electrolytic cell is 1.96 V at nominal load and 1.78 V at 50% of nominal load. The Faraday efficiency of the water electrolyzer stack is 95% at nominal current density, but at 50% of nominal load, the Faraday efficiency decreases to 80%.
(Give your answer to at least three significant digits.)
Calculate the nominal stack voltage:
Ms. Donahue rents a space in the mall for her store. The mall owner just increased the amount of her rent. As a result, Ms. Donahue decided to raise all the prices in her store by 5%. What is the new price of an item that had an original price of $80? A.$84
B. $85 C.$120