The number of downloads of the high quality version that was made was 600.
This is a great system of equations problem
If we call the number of standard version downloads (S)
The high quality downloads (H).
To find S, we can rearrange the first statement to H = 910 - S,
Then we would substitute (910 - S) wherever you see an H in the second equation so that you have only S's in your equation.
Thus:
2.8(S) + 4.4(910 - S) = 3044
2.8S + 4004 - 4.4S = 3044
-1.6S = -960
s = 600
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