Question

1. there were a total of 640 students at a school on friday. every student either walked or rode in a bus to school. if 45% of the total number of students walked to the school on friday, how many of the students rode in a bus to the school? (2022, #37)

a. 288
b. 352
c. 585
d. 595

Explanation:

Step1: Calcular % de estudiantes en autobús

La proporción de estudiantes que tomaron el autobús es $100\% - 45\% = 55\%$, o $0.55$ en decimal.

Step2: Calcular número de estudiantes

Multiplicar el total de estudiantes por la proporción calculada:
$640 \times 0.55$

Answer:

B. 352