MathMaster logo

MathMaster

  1. Home
  2. general
  3. 1 the university library purchased books on macroeconomics microeconomics and statistics she devoted 500 to the purchase o
Question

1) The university library purchased books on macroeconomics, microeconomics and statistics. She devoted €500 to the purchase of macroeconomics books (unit price €50), €1000 to the purchase of microeconomics books (unit price €50) and €500 to the purchase of statistics works (unit price €25). The average price of a work is: (A) €40 (b) €38 (c) €35 (d) €41.6

146

likes
729 views

Answer to a math question 1) The university library purchased books on macroeconomics, microeconomics and statistics. She devoted €500 to the purchase of macroeconomics books (unit price €50), €1000 to the purchase of microeconomics books (unit price €50) and €500 to the purchase of statistics works (unit price €25). The average price of a work is: (A) €40 (b) €38 (c) €35 (d) €41.6

Expert avatar
Sigrid
4.5
119 Answers
Pour connaître le prix moyen d’une œuvre, il faut calculer la dépense totale en livres et la diviser par le nombre total de livres achetés. La bibliothèque universitaire a dépensé : 500 € sur les livres de macroéconomie 1000 € sur les livres de microéconomie 500 € sur les livres de statistiques Les prix unitaires sont : 50 € pour les livres de macroéconomie 50 € pour les livres de microéconomie 25 € pour les livres de statistiques Pour connaître le nombre total de livres achetés dans chaque catégorie, nous divisons les dépenses par le prix unitaire. Pour les livres de macroéconomie : 500 € / 50 € = 10 livres Pour les livres de microéconomie : 1000 € / 50 € = 20 livres Pour les livres de statistiques : 500 € / 25 € = 20 livres Le nombre total de livres achetés est de 10 + 20 + 20 = 50 livres. Maintenant, pour trouver le prix moyen par livre, on divise la dépense totale par le nombre total de livres : Dépense totale = 500 € + 1 000 € + 500 € = 2 000 € Prix moyen par livre = Dépense totale / Nombre total de livres = 2000€ / 50 = 40€ Ainsi, le prix moyen d'une œuvre est de 40 €, ce qui correspond à l'option (A).

Frequently asked questions (FAQs)
What is 75% as a fraction in its simplest form?
+
What is the integral of 3x^2 + 4x + 2?
+
What is the resultant displacement when vector A (12i + 8j) is added to vector B (-5i + 3j)?
+
New questions in Mathematics
A=m/2-t isolate t
Simplify the expression sin³(x)+cos³(x), using trigonometric functions
Eight acts are scheduled to perform in a variety show how many different ways are there to schedule their appearances show your work
A circular park has a diameter of 150ft. A circular fence is to be placed on the edge of this park. Calculate the cost of fencing this park if the rate charged is $7 per foot. Use π = 3.14.
Karina has a plot of 5000 square meters in which she has decided that 60% of it will be used to plant vegetables. Of this part, 12% will be dedicated to planting lettuce. How much surface area of the plot will be used to grow lettuce?
The Lenovo company manufactures laptop computers, it is known that for every 60 laptops produced, 54 go on the market with the highest quality standards. If a sample of 15 laptops is taken, calculate the probability that: Exactly 2 are not of high quality
(3x^(2) 9x 6)/(5x^(2)-20)
41/39 - 1/38
The equation of the straight line that passes through the coordinate point (2,5) and is parallel to the straight line with equation x 2y 9 = 0 is
Prove that it is not possible to arrange the integers 1 to 240 in a table with 15 rows and 16 columns in such a way that the sum of the numbers in each of the columns is the same.
(24, -7) is on the terminal arm of an angle in standard position. Determine the exact values of the primary trigonometric functions.
A function is considered exponential when it has a base with positive values greater than zero and different from one, where the exponent is an unknown. An important characteristic of exponential functions is that they show rapid growth or decay as an independent variable increases or decreases. Given the function 25^(x+3)=125, it is calculated that x has the value of
The volume of a cube decreases at a rate of 10 m3/s. Find the rate at which the side of the cube changes when the side of the cube is 2 m.
suppose a city with population 80,000 has been growing at a rate of 8% per year if this rate continues find the population of this city in 10 years
00 piece jigsaw puzzle. the completed puzzle is 10x10. each piech connects to at least 2 other pieces. i plan to assemble by taking pieces out of box one by one. if i've already taken out 2 pieces that dont directly connect, what is the minimum number of additional pieces that i need to draw to in order to guarentee that the original 2 pieces connect?
there are 500,000 bacteria at the end of a pin point. 1000 bacteria can make a person sick. then bacteria at the tip of a pin point can make 500 people sick. Also, many people do not know that bacteria can (reproduce). Let's say there are 5 bacteria and we leave it for 15 minutes. bacteria will multiply to 10. if left for up to 30 minutes, 20 bacteria will form. if left up to 45 minutes. bacteria will multiply up to 40. every 15 minutes the bacteria will double 2. if you start with five bacteria that reproduce every 15 minutes, how manu bacteria would you have after 12 hours ?
Identify the slope and y intercept y=11+2/3x
the product of a 2-digit number and a 3-digit number is about 50000, what are these numbers
Emile organizes a community dance to raise funds. In addition to paying $300 to rent the room, she must rent chairs at $2 each. The quantity of chairs rented will be equal to the number of tickets sold. She sells tickets for $7 each. How much should she sell to raise money?
Beren spent 60% of the money in her piggy bank, and Ceren spent 7% of the money in her piggy bank to buy a joint gift for Deren, totaling 90 TL. In the end, it was observed that the remaining amounts in Ceren and Beren's piggy banks were equal. Therefore, what was the total amount of money that Beren and Ceren had initially? A) 120 B) 130 C) 150 D) 160 E) 180

You might be interested in