math
posted by Jayda .
Two fifths of the students in a class of 1200 own pc,s, how many students do not own pc's.
2/5 x 1200=480
1200480=720 is this correct?
30% of the students who own pc's also own play stations, what fraction of the students in the school own play station?
How do i work out this part?

Yes, your first answer is correct.
30% of 480 = 0.3 * 480 = 144 students own play stations and pcs.
144/1200 = 12/100 = 3/25
Respond to this Question
Similar Questions

math
There were 3 times as many adults as students attending a school play. If the attendance was 480, how many adults and how many students attended the play? 
math
Mrs. Bollo's second grade class of thirty students conducted a pet ownership survey. Results of the survey indicate that 8 students own a cat, 15 students own a dog, and 5 students own both a cat and a dog. How many of the students … 
math
It has been determined that 30% of students at a certain high school own a cell phone. If 95 students are randomly selected determine the probability that exactly 20 students own a cell phone. *if using a calculator show syntax used* 
Statistics
12. The proportion of students who own a cell phone on college campuses across the country has increased tremendously over the past few years. It is estimated that approximately 94% of students now own a cell phone. Twenty five students … 
Math
THe ratio of the number of students who own an ipod to those who do not own an ipod is 7 to 8. There are a total of 45 students. How many students in the class do not own an ipod? 
math
Taylor surveys students in one grade level who own at least one pet. She finds that 50% of the students surveyed own 2 pets, 3 students own 3 pets each, and 2 students own 4 pets each. Eight of the students in the grade own 1 pet. … 
Statistics
The proportion of students who own a cell phone on college campuses across the country has increased tremendously over the past few years. It is estimated that approximately 90% of students now own a cell phone and 10% do not own a … 
math
Mrs. Bollo's second grade class of thirty students conducted a pet ownership survey.results of the survey indicated that 8 students own a cat, 15 students own a dog and five students owned neither a cat or a dog. how many of the students … 
math in distress
A total of 1,200 students attended Top View high school the ratio of teachers to students is 1:30. How many teachers are there in the school? 
MATH
Taylor surveys students in one grade level who own at least one pet. She finds that 50% of the students surveyed own 2 pets, 3 students own 3 pets each, and 2 students own 4 pets each. Eight of the students in the grade own 1 pet. …