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
likes1071 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?
Timmothy
4.899 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)
Math question: What is the limit as x approaches 5 of (3x^2 - 7x + 4)/(x - 5)?
+
What is the product of 36 and 44?
+
What is the value of f(x) for the constant function f(x) = c if c = 7?
+
New questions in Mathematics