Answer:
1) new price of the clock is $14.4
2) Kyra scored 70% marks
3) 43.75% students are not eighth graders
Step-by-step explanation:
1. A store manager marked up the price of a $12 clock by 20%. What is the new price of the clock?
Price of Clock = $12
Mark up = 20%
We need to find new price of clock.
The price of clock can be found by finding 20% of 12 and then adding that amount in original price.
So, finding 20% of 12
[tex]20\% of 12 \\=\frac{20}{100}\times 12\\=2.4[/tex]
So 20% of 12 is 2.4
Now finding new price:
New Price = Actual Price + Mark up
New Price = 12 + 2.4
New Price = 14.4
So, new price of the clock is $14.4
2. On a math quiz, Kyra answered 7 of 10 questions correctly. Express her quiz score as a percent.
Total questions = 10
Correct answers = 7
We need to express her quiz score as percent
It can be found using formula: [tex]Percent Score = \frac{Obtained\:Marks}{Total\:Marks}\times 100\%\\[/tex]
Putting values and finding percentage
[tex]Percentage = \frac{Obtained\:Marks}{Total\:Marks}\times 100\%\\\\Percentage = \frac{7}{10}\times 100\%\\Percentage = 70\%[/tex]
So, Kyra scored 70% marks
3. 96 students are enrolled in the Dance Program at Castillero. Of those students, 54 are eighth-graders. The remaining students are 6th or 7th graders. What percentage of the students are not eighth graders?
Total Students = 96
Number of eighth-graders students = 54
Remaining students = 96 - 54 = 42
So, 42 students are 6th or 7th graders
We need to find percentage of the students are not eighth graders.
[tex]\frac{42}{96}\times 100\%\\=43.75\%[/tex]
So, 43.75% students are not eighth graders
