The Reeds are moving across the state. Mr. Reed leaves 3 hours before Mrs. Reed. If he averages 45mph and she averages 95mph, how long will it take Mrs. Reed overtake Mr. Reed?
2007-02-21 04:58:21 · 2 answers · asked by Cutechicana 2 in Education & Reference ➔ Homework Help
Though correct in intention 2.7 hours is not the correct answer. There is no teacher that will accept decimal time telling as an answer. Convert it to hours and minutes.
(for convenience you can redo the math using minutes instead of hours OR calculate what 70% of 60 minutes is.)
2007-02-21 05:18:08 · answer #1 · answered by Puppy Zwolle 7 · 0⤊ 0⤋
Mr Reed's Distants = Mr
Mrs Reed's Distants = Mrs
time = t
Mr = 45(t + 3)
Mrs = 95t
We want Mr to equal Mrs so
Mr = Mrs
45(t+3) = 95t
45t + 135 = 95t
135 = 50t
t = 135/50
t = 27/10
t = 2.7 hours
2007-02-21 05:07:35 · answer #2 · answered by theFo0t 3 · 1⤊ 1⤋