Answer:
<u>There were initially 1,000 students: 600 girls, 400 boys and 400 that like to dance. Now, there are 1,020 students: 600 girls, 420 boys and 420 that like to dance.</u>
Step-by-step explanation:
1. Let's review the information given to us to answer the question correctly:
Students attending the school party = 60% girls - 40% boys
Students that like to dance = 40%
20 boy students joined the party and all of them like to dance
Now the party = 58% girls - 42% boys
2. How many students now at the party like to dance?
x = Number of students attending the party
Let's calculate the number of students at the party, using the Rule of Three Simple, this way:
Number of students Percent
x 100
20 2
x = (100 * 20)/2
x = 2,000/2 = 1,000
<u>There were initially 1,000 students: 600 girls, 400 boys and 400 that like to dance. Now, there are 1,020 students: 600 girls, 420 boys and 420 that like to dance.</u>