Answer: 240
Step-by-step explanation:
Let x be the number of standard version and y be the number of high- quality version.
According to the question, we get the following equations
[tex]2x=y...(1)\\2.3x+4.9y=2904.........(2)[/tex]
Substitute y=2x in (2), we get
[tex]2.3x+4.9(2x)=2904\\\Rightarrow2.3x+9.8x=2904\\\Rightarrow12.1x=2904\\\Rightarrow\ x=\frac{2904}{12.1}\\\Rightarrow\ x=\frac{29040}{121}\\\Rightarrow\ x=240[/tex]
Substitute x= 240 in (1), we get
Thus, the number of standard versions downloads = 240
