Question

A school has 400 students. If 40 students were surveyed, what percent of the school was surveyed?​

Answer 1

Explanation:

160% Was surveyed!

40% of 400

Answer 2

0.18

Explanation:

Given: 60% students were in high school, 40% were in middle school and of the high school students, 30% had visited a foreign country

To find: probability that the student is in high school and has visited a foreign country

Solution:

Let x denotes total number of students

Number of students in high school = 60% of x =

Number of students in middle school = 40% of x =

Number of students who are in high school and have visited foreign country = 30% of Number of students in high school =

Probability that the student is in high school and has visited a foreign country = Number of students who are in high school and have visited foreign country/ Total number of students =