Question
Find the number of liters of water needed to reduce 9 liters of lotion. shave containing 50% alcohol to a lotion containing 30% alcohol.
233
likes1165 views
Answer to a math question Find the number of liters of water needed to reduce 9 liters of lotion. shave containing 50% alcohol to a lotion containing 30% alcohol.
Clarabelle
4.794 Answers
Solución:
Sea x el número de litros de agua que se van a añadir. Por lo tanto, el volumen después de agregar agua es 9+x.
La cantidad de alcohol se mantendría constante antes y añadiendo el agua. Por lo tanto,
0.5\izquierda(9\derecha)=0.3\izquierda(9+x\derecha)
Resolviendo para x,
4,5=2,7+0,3x
0,3x=1,8
x=6
Respuesta: Se deben agregar 6 litros de agua para diluir una loción con 50% de alcohol hasta 30% de alcohol.
Frequently asked questions (FAQs)
What is the value of the cube root of x if the cube root function passes through the point (8,2)?
+
What is the domain of the function f(x) = sin(x) + cos(2x) for x in radians?
+
What are the characteristics of a hyperbola with a vertical transverse axis and a center at (0,0)?
+
New questions in Mathematics