Vincen wrote:A certain school teaches fourth, fifth, and sixth grades only, with 150 students in each grade. During one day of a blizzard, 10% of the fourth-grade students, 1/6 of the fifth-grade students, and 60 of the sixth-grade students do not attend school. The student attendance on that day is approximately what percent less than full attendance?
A. 11%
B. 16%
C. 22%
D. 31%
E. 33%
The OA is C.
This exercises with percentages don't like me. I got confused. Experts help. Thanks.
Hi Vincen,
Let's take a look at your question.
The question states that A certain school teaches fourth, fifth, and sixth grades only, with 150 students in each grade.
Total students = 150 x 3 = 450
During one day of a blizzard, 10% of the fourth-grade students, 1/6 of the fifth-grade students, and 60 of the sixth-grade students do not attend school.
Let's find the total number of students who do not attend the school.
10% of the fourth-grade students.
=150 x (10/100)
=15 x 1 = 15 students of fourth grade students
1/6 of the fifth-grade students.
= 150 x (1/6)
= 25 students of fifth grade students
60 of the sixth-grade students do not attend school.
Total number of students who do not attend the school = 15 + 25 + 60 = 100 students
Percentage = (100/450) x 100% = 22.22%, that is approximately equal to 22%.
Therefore, Option
C is correct.
I am available if you'd like any followup.
