Question
80% of the students who attended a concert came from the city. Of these, 70% were girls. If 150 boys came from the city, how many students attended the concert?
Answers
Jorge
First, you must find the percentage of boys who came from the city. Since 70% of students who came from the city were girls, then 30% were boys. Next, you must find how many total students were from the city using the proportion:
# of boys from the city/total students from city = percentage of boys from the city/100
Once you find that, you use this proportion to find the total number of students who went to the concert:
# of students from city/# of students total = Percentage of students from the city/100
Hope this helps :)
# of boys from the city/total students from city = percentage of boys from the city/100
Once you find that, you use this proportion to find the total number of students who went to the concert:
# of students from city/# of students total = Percentage of students from the city/100
Hope this helps :)