Question

A product has increased in price by 25%. Two discounts were granted on the sale. successive rates of 4% and 3.5%, leaving the final price at R$100.75. What was the initial price of this merchandise?

54

likes
268 views

Answer to a math question A product has increased in price by 25%. Two discounts were granted on the sale. successive rates of 4% and 3.5%, leaving the final price at R$100.75. What was the initial price of this merchandise?

Expert avatar
Dexter
4.7
114 Answers
1. Seja P_{\text{inicial}} o preço inicial da mercadoria.

2. Após um aumento de 25%, o preço se torna:

P_{\text{aumentado}} = P_{\text{inicial}} \times 1.25

3. Aplicando o primeiro desconto de 4%, o preço se torna:

P_{\text{desconto1}} = P_{\text{aumentado}} \times (1 - 0.04) = P_{\text{aumentado}} \times 0.96

4. Aplicando o segundo desconto de 3,5%, o preço final é:

P_{\text{final}} = P_{\text{desconto1}} \times (1 - 0.035) = P_{\text{desconto1}} \times 0.965

5. O preço final é dado como R$ 100,75. Portanto, temos:

100.75 = P_{\text{inicial}} \times 1.25 \times 0.96 \times 0.965

6. Simplificando, temos:

100.75 = P_{\text{inicial}} \times 1.1568

7. Resolvendo para P_{\text{inicial}} , obtemos:

P_{\text{inicial}} = \frac{100.75}{1.1568}

8. Aproximando o cálculo, temos:

P_{\text{inicial}}\approx87.00

O preço inicial da mercadoria era aproximadamente R$ 87.00

Frequently asked questions (FAQs)
What is the area of a triangle with side lengths of 5, 7, and 9?
+
Math question: "What is the product of the complex numbers (3 + 2i) and (-4 - 5i)?"
+
What is the dimension of the vector space spanned by the basis {v₁, v₂, v₃} where v₁ = (1, 2), v₂ = (3, 4), and v₃ = (5, 6)?
+
New questions in Mathematics
Calculate to represent the function whose graph is a line that passes through the points (1,2) and (−3,4). What is your slope?
How much volume of water in MegaLiters (ML) is required to irrigate 30 Hectare crop area with depth of 20mm?
Use the digits of 1,9,2,3 to come up with all the numbers 98 and 95
-8+3/5
Exercise 4 - the line (AC) is perpendicular to the line (AB) - the line (EB) is perpendicular to the line (AB) - the lines (AE) and (BC) intersect at D - AC = 2.4 cm; BD = 2.5 cm: DC = 1.5 cm Determine the area of triangle ABE.
what is 456456446+24566457
Clara usually walks briskly to the farmers' market and it takes her 22 minutes. Today she walked leisurely and it took 61/2 minutes. How much more time than usual did she take to reach the market today?
X³-27
What is 75 percent less than 60
-1%2F2x-4%3D18
A Smooth Plane is listed for $195.00. Discounts of 12% and 10% are allowed. If the customer pays cash within 30 days, an additional discount of 3% is granted. What is the cost if a carpenter takes advantage of all the discounts offered?
A cell phone company offers two calling plans. Plan A: $20 per month plus 5 cents for each minute, or Plan B: $30 per month plus 3 cents for each minute. [2] Write an equation to describe the monthly cost (a) C (in $) in terms of the time m (in minutes) of phone calls when Plan A is applied.
ind the z-score for which 72% of the distribution's area lies between -z and z. -1.7417, 1.7417 -1.1538, 1.1538 -1.0803, 1.0803 -2.826, 2.826
In a physics degree course, there is an average dropout of 17 students in the first semester. What is the probability that the number of dropouts in the first semester in a randomly selected year has between 13 and 16 students?
Write the equation of the line that is parallel to y= 4x-7 and has a y- intercept at (0,5)
Find the zero of the linear function 8x + 24 = 0
1. A jeweler has two gold bars, with 80% purity and the other with 95% purity. How much of each must be melted to obtain a 5 kilo ingot with 86% purity?
22. Let [AB] be a chord in a circle C, and k a circle which is internally tangent to the circle C at a point P and to the chord [AB] at a point Q. Show that the line P Q passes through the midpoint of the arc AB opposite to the arc APB.
8/9 divided by 10/6
9n + 7(-8 + 4k) use k=2 and n=3