Mathematics
IldaHerriott286
2015-11-06 16:17:39
I REALLY NEED HELP Traveling at 45 miles per hour, how many minutes, rounded to the nearest whole number, does it take to drive 240 miles from Orlando to Miami? A 5 B 195 C 285 D 320
ANSWERS
lyzukagirl2011
2015-11-06 23:09:28

there are 60 minutes in one hour, thus, 45 miles per hour is 45 miles per 60 minutes, thus [latex]f egin{array}{ccll} miles&minutes\ ext{ extemdash extemdash extemdash}& ext{ extemdash extemdash extemdash}\ 45&60\ 240&m end{array}implies cfrac{45}{240}=cfrac{60}{m}implies m=cfrac{240cdot 60}{45}[/latex]

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