Question

En la escuela Francisco I. Madero de ciudad Delicias, llevaron a cabo el festejo para
conmemorar la llegada de la primavera, después del desfile se instalaron los puestos
de la kermés. El grupo de primer grado compró 8 pasteles y vendieron 3/4 del total.
¿Qué cantidad de pastel no se vendió?

Answer 1

Answer:

The number of unsold cakes was 2

Step-by-step explanation:

The question in English is

In the school Francisco I. Madero of Ciudad Delicias, the celebration was held for  commemorate the arrival of spring, after the parade the stalls were set up  of the kermesse. The first grade group bought 8 cakes and sold 3/4 of the total.

How much of the cake was not sold?

Let

x ----> number of cakes sold

y ----> number of cakes that didn't sell

we know that

The first grade group bought 8 cakes

so

$x+y=8$ -----> equation A

The first grade group sold 3/4 of the total.

so

$x=\frac{3}{4}(x+y)$ ---> equation B

substitute equation A in equation B

$x=\frac{3}{4}(8)=6$

Find the value of y

$6+y=8$

$y=2$

therefore

The number of unsold cakes was 2