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
1200-480=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
To find out how many students in the school own playstations, you need to calculate 30% of the total number of students who own PCs.
30% of 480 (the number of students who own PCs) can be calculated as:
(30/100) x 480 = 0.3 x 480 = 144
So, 144 students in the school own playstations.
To find the fraction of students in the school who own playstations, divide the number of students who own playstations by the total number of students in the school:
144/1200 = 12/100 = 3/25
Therefore, the fraction of students in the school who own playstations is 3/25.
To find the number of students who do not own PCs, you can subtract the number of students who do own PCs from the total number of students in the class.
Given that 2/5 of the students own PCs in a class of 1200:
Number of students who own PCs = 2/5 x 1200 = 480
To find the number of students who do not own PCs:
Number of students who do not own PCs = Total number of students - Number of students who own PCs
= 1200 - 480
= 720
So, you are correct. There are 720 students who do not own PCs.
To find what fraction of the students in the school own Playstation, first, you need to find the number of students who own Playstations.
Given that 30% of the students who own PCs also own Playstations:
Number of students who own Playstations = 30% of 480
To find 30% of a number, you can multiply the number by 0.3:
Number of students who own Playstations = 0.3 x 480
To calculate this:
Number of students who own Playstations = 144
Now, to find the fraction of students who own Playstations, you need to divide the number of students who own Playstations by the total number of students in the school:
Fraction of students who own Playstations = (Number of students who own Playstations) / (Total number of students in the school)
= 144 / 1200
To simplify this fraction, you can divide both the numerator and the denominator by their greatest common divisor, which in this case is 12:
Fraction of students who own Playstations = 12 / 100
Therefore, the fraction of students in the school who own Playstations is 12/100, which can also be written as 3/25.