Respuesta :

Make 2 equations  one for the total downloads and the other for total size 
Let x = number of standard  downloads and y = number of quality downloads.

x       +    y   = 840
2.7x + 4.4y = 2846


from first equation  y = 840  -x    Now plug this into the second equation:_

2.7x  + 4.4(840 - x) = 2846

-1.7x = -850

x = 500   Number of standard versions downloaded = 500 Answer
Piinoy
s = standard
h = high quality

[tex] \left \{ {{s + h = 840} \atop {2.7s + 4.4h = 2846}} \right. [/tex]

s + h = 840Subtract s from both sides.
h = -s + 840

Input h to the other equation.

2.7s + 4.4(-s + 840) = 2846
2.7s + -4.4s + 3696 = 2846
Subtract 3696 from both sides.
-1.7s = -850
Divide both sides by -1.7
s = 500

h = -500 + 840
h = 340

There were 500 downloads of the standard form

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