Question

La tabla siguiente da el porcentaje de estudiantes en cada grado en las escuelas primarias Annville y Cleona. Los porcentajes para los grados K, $1, 2, 3, 4, 5, 6$ son: Annville: $16\%,$ $15\%,$ $15\%,$ $14\%,$ $13\%,$ $16\%,$ $11\%;$ Cleona: $12\%,$ $15\%,$ $14\%,$ $13\%,$ $15\%,$ $14\%,$ $17\%.$

Annville tiene $100$ estudiantes y Cleona tiene $200$ estudiantes. En las dos escuelas combinadas, ¿qué porcentaje de los estudiantes está en el grado $6$ ?

The table below gives the percent of students in each grade at Annville and Cleona elementary schools. The percentages for grades K, $1, 2, 3, 4, 5, 6$ are: Annville: $16\%,$ $15\%,$ $15\%,$ $14\%,$ $13\%,$ $16\%,$ $11\%;$ Cleona: $12\%,$ $15\%,$ $14\%,$ $13\%,$ $15\%,$ $14\%,$ $17\%.$

Annville has $100$ students and Cleona has $200$ students. In the two schools combined, what percent of the students are in grade $6?$

$12\%$

$13\%$

$14\%$

$15\%$

$28\%$

Solución:

Annville tiene $11\%$ de $100 = 11$ estudiantes de sexto grado, y Cleona tiene $17\%$ de $200 = 34$ estudiantes de sexto grado.

En conjunto, eso es $11 + 34 = 45$ de $300$ estudiantes, lo que es $\dfrac{45}{300} = 15\%.$

Por lo tanto, la respuesta correcta es D.

Annville has $11\%$ of $100 = 11$ sixth graders, and Cleona has $17\%$ of $200 = 34$ sixth graders.

Combined, that is $11 + 34 = 45$ out of $300$ students, which is $\dfrac{45}{300} = 15\%.$

Thus, the correct answer is D .

1995 AMC 8 Problema 17

Solución:

El Problema 17 en otros años