Question

On January 25th, 80% pass, on January 31st, 75% pass, and on February 3rd, 85% pass. Determine the minimum percentage of integralists?

261

likes
1306 views

Answer to a math question On January 25th, 80% pass, on January 31st, 75% pass, and on February 3rd, 85% pass. Determine the minimum percentage of integralists?

Expert avatar
Cristian
4.7
119 Answers
Să presupunem că numărul total de întregiți este reprezentat de variabila $x$.

Pe 25 ianuarie trec 80% din numărul total de întregiți, ceea ce înseamnă că numărul de întregiți care trec este $0.8x$.

Pe 31 ianuarie trec 75% din numărul total de întregiți, ceea ce înseamnă că numărul de întregiți care trec este $0.75x$.

Pe 3 februarie trec 85% din numărul total de întregiți, ceea ce înseamnă că numărul de întregiți care trec este $0.85x$.

Pentru a determina procentul minim de întregiți, trebuie să găsim cea mai mică valoare comună (CMMD) a procentelor menționate mai sus.

Luând în considerare acești trei factori comuni ai întregiților, putem folosi formula $CMMD = \frac{x}{100}$, unde $x$ reprezintă procentul minim de întregiți care trec.

CMMD = \frac{x}{100} = \frac{0.8x}{100} = \frac{0.75x}{100} = \frac{0.85x}{100}

Pentru a găsi procentul minim de întregiți, putem găsi CMMDC-ul procentelor 80%, 75% și 85%. Putem face acest lucru prin simplificarea fracțiilor:

CMMD = \frac{x}{100} = \frac{0.8x}{100} = \frac{4}{5} \cdot \frac{x}{100} = \frac{3}{4} \cdot \frac{x}{100} = \frac{17}{20} \cdot \frac{x}{100}

Acum putem determina procentul minim de întregiți:

\frac{x}{100} = \frac{17}{20} \cdot \frac{x}{100} \Rightarrow 1 = \frac{17}{20} \Rightarrow \frac{20}{20} = \frac{17}{20} \Rightarrow \frac{3}{20} = \frac{x}{100} \Rightarrow x = \frac{3}{20} \cdot 100 = \frac{300}{20} = \frac{15}{1} = 15

Answer: Procentul minim de înegalități este de 15%.

Frequently asked questions (FAQs)
What is the equation of a circle with a radius of 5 units and its center at the origin?
+
Question: What is the measure of the interior angles of an octagon?
+
What is the square root of 3721?
+
New questions in Mathematics
P is a polynomial defined by P(x) = 4x^3 - 11×^2 - 6x + 9. Two factors are (x - 3) and (x + 1). Rewrite the expression for P as the product of linear factors.
If L = (-2, -5) is reflected across y= -4 , what are the coordinates of L?
3x+5y=11 2x-3y=1
[(36,000,000)(0.000003)^2]divided(0.00000006)
(3x^(2) 9x 6)/(5x^(2)-20)
Suppose a large shipment of cell phones contain 21% defective. If the sample of size 204 is selected, what is the probability that the sample proportion will differ from the population proportion by less than 4% round your answer to four decimal places
You have been hired to estimate the average weight of quarters in circulation. Based on the sample of quarters you collect (below), create a 90% confidence interval for the weight of quarters in circulation. Quarter Weights (grams) 5.631 5.714 5.719 5.689 5.551 5.723 5.705 5.627 5.627 5.715 5.576 5.632 5.641 5.676 5.660 5.699 5.609 5.634 5.713 5.591 5.674 5.675 5.684 5.694 5.655 5.632 5.598 5.675 5.628 5.562 5.636 5.583 5.567 5.551 5.649 5.708 5.696 5.614 5.637 5.601 5.628 5.711 5.566 5.653 5.653 5.597 5.687 5.717 5.678 5.654 5.556 5.707 5.563 5.628 5.679 5.714 5.555 5.719 5.634 5.647 5.717 5.612 5.705 5.657 5.670 5.607 5.687 5.666 5.612 5.718 5.714 5.713 5.663 5.641 5.589 5.656 5.712 5.639 5.577 5.580 5.674 5.636 5.625 5.597 5.616 5.591 5.616 5.700 5.706 5.695 5.562 5.699 5.607 5.573 5.659 5.632 5.654 5.568 5.628 5.687 5.605 5.689 5.687 5.554 5.618 5.701 5.681 5.645 5.714 5.665 5.661 5.634 5.714 5.586 5.656 5.673 5.657 5.717 5.611 5.578 5.579 5.614 5.644 5.724 5.647 5.566 5.697 5.558 5.586 5.586 5.611 5.573 5.573 5.709 5.629 5.649 5.552 5.615 5.645 5.611 5.686 5.588 5.641 5.704 5.703 5.696 5.557 5.551 5.725 5.608 5.725 5.603 5.677 5.638 5.573 5.640 5.561 5.631 5.563 5.671 5.662 5.569 5.648 5.680 5.681 5.551 5.555 5.578 5.701 5.645 5.670 5.574 5.594 5.705 5.633 5.719 5.680 5.647 5.641 5.553 5.616 5.698 5.552 5.566 5.559 5.697 5.686 5.560 5.629 5.701 5.622 5.615 5.553 5.608 5.637 5.663 5.696 5.714 5.675 5.613 5.594 5.669 5.569 5.716 5.705 5.603 5.709 5.717 5.606 5.581 5.575 5.601 5.600 5.664 5.715 5.705 5.583 5.586 5.592 5.550 5.628 5.662 5.603 5.559 5.676 5.558 5.678 5.671 5.642 5.581 5.568 5.706 5.665 5.712 5.574 5.602 5.699 5.716 5.693 5.711 5.635 5.612 BLANK #1: Is this a question involving mean or proportion? ***ANSWER "MEAN" OR "PROPORTION" (WITHOUT THE QUOTATION MARKS)*** BLANK #2: What is the LOW end of the estimate ***ANSWER TO 3 DECIMALS*** BLANK #3: What is the HIGH end of the estimate ***ANSWER TO 3 DECIMALS***
4. Show that if n is any integer, then n^2 3n 5 is an odd integer
prove that if n odd integer then n^2+5 is even
Suppose the Golf ball market is perfectly competitive and the functions are known: Q = 120 – 2Px – 2Py 0.2I Q = 2Px 40 Where I = Consumers' income ($200) and Py = Price of Good Y (40) Calculate the equilibrium elasticity: a) 1.6 b) -6 c) 6 d) 0.6
Determine the reduced equation of the straight line that is perpendicular to the straight line r: y=4x-10 and passes through the origin of the Cartesian plane
Quadratic equation 2X = 15/X + 7
nI Exercises 65-68, the latitudes of a pair of cities are given. Assume that one city si directly south of the other and that the earth is a perfect sphere of radius 4000 miles. Use the arc length formula in terms of degrees to find the distance between the two cities. 65. The North Pole: latitude 90° north Springfield, Illinois: latitude 40° north
At the end of a lively discussion within your study group, your class neighbor, for the relevance of your points of view, asks your opinion on the subject of their debate which is the following question Am I the slave of my unconscious? Solve the problem posed by this subject in an argumentative production.
Evaluate ab+dc if a=56 , b=−34 , c=0.4 , and d=12 . Write in simplest form.
y′ = 2x + 3y x′ = 7x − 4y x(0) = 2 y(0) = −1 sisteminin ¸c¨oz¨um¨un¨u bulunuz. (Lineer Denk. Sis.)
A 20-year old hopes to retire by age 65. To help with future expenses, they invest $6 500 today at an interest rate of 6.4% compounded annually. At age 65, what is the difference between the exact accumulated value and the approximate accumulated value (using the Rule of 72)?
4m - 3t + 7 = 16
Select a variable and collect at least 50 data values. For example, you may ask the students in the college how many hours they study per week or how old they are, etc. a. Explain what your target population was. b. State how the sample was selected. c. Summarise the data by using a frequency table. d. Calculate all the descriptive measures for the data and describe the data set using the measures. e. Present the data in an appropriate way. f. Write a paragraph summarizing the data.
The length of a rectangle is five more than its width. if the perimeter is 120, find both the length and the width.