$MathMaster logo$

MathMaster

Home
general
to paint a 250 m wall a number of workers were employed if the wall were 30 m longer 9 more workers would be needed how ma

Question

To paint a 250 m wall, a number of workers were employed. If the wall were 30 m longer, 9 more workers would be needed. How many were employed at the beginning?

214

likes

1071 views

Answer to a math question To paint a 250 m wall, a number of workers were employed. If the wall were 30 m longer, 9 more workers would be needed. How many were employed at the beginning?

$Expert avatar$

4.8

99 Answers

Según la información proporcionada, si el muro fuera 30 m más largo, se necesitarían 9 trabajadores más. Esto significa que el número de trabajadores necesarios para pintar una pared de 280 m sería "x + 9". Podemos establecer una proporción para resolver el problema: 250 m / x trabajadores = 280 m / (x + 9) trabajadores Para resolver esta proporción, podemos multiplicar de forma cruzada: 250(x + 9) = 280x 250x + 2250 = 280x 2250 = 30x x = 75 Por lo tanto, inicialmente se emplearon 75 trabajadores para pintar la pared de 250 m.

Frequently asked questions (FAQs)

Find the value, in radians, of the angle whose sine function is equal to half its cosine function.

+

What is the measure of an angle if its bisector splits it into two smaller angles measuring 38 degrees

+

What is the value of sinh(3) + cosh(5)?

+

New questions in Mathematics

A=m/2-t isolate t

a to the power of 2 minus 16 over a plus 4, what is the result?

Convert the following function from standard form to vertex form f(x) = x^2 + 7x - 1

Y=-x^2-8x-15 X=-7

A normally distributed population has a mean of 118 with a standard deviation of 18. What score separates the lowest 72% of the distribution from the rest of the scores?

90 divided by 40

5 people can complete a task in 72 hours. How many people are needed to complete the task in 60 hours.

The ratio of tomatoes to red apples is 2:5. If there are 20 tomaoes in the garden, how many red apples are there?

If you randomly selected one person from the 900 subjects in this study, what is the probability that the person exhibits the minimum BMI?

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

What’s the slope of a tangent line at x=1 for f(x)=x2. We can find the slopes of a sequence of secant lines that get closer and closer to the tangent line. What we are working towards is the process of finding a “limit” which is a foundational topic of calculus.

The market for economics textbooks is represented by the following supply and demand equations: P = 5 + 2Qs P = 20 - Qd Where P is the price in £s and Qs and Qd are the quantities supplied and demanded in thousands. What is the equilibrium price?

Use the sample data and confidence level given below to complete parts (a) through (d). A drug is used to help prevent blood clots in certain patients. In clinical trials, among 4336 patients treated with the drug, 194 developed the adverse reaction of nausea. Construct a 99% confidence interval for the proportion of adverse reactions.

What is the value of f(-3) for the function X squared+5x-8=

did an analysis of dropout from the nursing faculty at the Universidad Veracruzana. With a poblation of 122 students, it turned out that according to the gender data, the female sex predominates with 82%, and the male sex male is found with 12%. The main factors why students drop out are, first of all, "Not "re-enrolled" at 49%, second place "Personal reasons" at 20%, third place "change of school" in 11%, "lack of documents" and "economic reasons" in 7%, change of residence and lack of social service in 3%. Of this sample, how many students dropped out for other reasons?

Let f(x)=-1/2x+5 evaluate f(-6)

f(r) = 1/r+9 find f(x^2) + 1