If you can run at 10mail an hour then how far can you get in 10 days and you take no brakes
2 answers:
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Write the equations: 
Substitute for h:
Solve for s:
There were 280 downloads of the standard version. There were 1120 downloads of the high-quality version.
Substitute for h:
Solve for s:
There were 280 downloads of the standard version. There were 1120 downloads of the high-quality version.