the rate traveled from Amarillo to austin by bus averages 60miles per hour.The bus arrived in Austin after eight hours of travel .An automobile averages 48 miles per hour.Using the inverse variation relationship,show what the time would be for the automobile to complete trip
is it 14.4 or 12 hours now?
2007-07-26 17:02:05 · 3 answers · asked by hola_kity2008 1 in Science & Mathematics ➔ Mathematics
Inverse variation relationship is expressed:
rate1 / rate2 = time2 / time1
Substituting rate1 (60 mph), time1 (8 hours), and rate2 (48 mph), solve for time2:
60 / 48 = t / 8
Cross-multiply:
60 / 48 = t / 8
60 * 8 = 48 * t
480 = 48t
10 hours = t
2007-07-26 17:09:23 · answer #1 · answered by McFate 7 · 0⤊ 0⤋
dist in miles from Am to Au= 480miles.
time for automobile =480/48=10h
2007-07-27 00:11:58 · answer #2 · answered by berry 1 · 0⤊ 0⤋
10 hours. (8*60)/48
2007-07-27 00:11:22 · answer #3 · answered by Jahir 2 · 0⤊ 0⤋