Arthur D. answered • 01/30/16
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distance=rate*time
1860=(r*2)+(r+30)*(2)
1860=2r+2r+60
1860=4r+60
1860-60=4r
1800=4r
r=1800/4
r=450 mph
r+30=450+30=480 mph
check: 450*2+480*2=900+960=1860
Arthur D.
tutor
No, Shatoria. The speeds are 450 mph and 480 mph. The planes are 1860 miles apart.
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01/31/16
Shatoria M.
01/30/16