1: Two jets leave an airport at the same time in opposite directions. The first jet is traveling at three hundred forty one mph and the other at three hundred thirty two mph. How long will it take for the jets to be 1,616 miles apart?
d r t
jet 1
jet 2
673 minutes
2.4 hours
2 hours 40 minutes
2 hours
2007-11-20 09:52:58 · 9 answers · asked by Est.1992 6 in Science & Mathematics ➔ Mathematics
At time t, the jets will be separated by 341t + 332t = 673t
So we want to find the value of t when
673t = 1616
which will be when
t = 1616/673 = 2.401 hours
=144.07 minutes
So, say 2.4 hours.
2007-11-20 09:58:35 · answer #1 · answered by Anonymous · 1⤊ 0⤋
They are moving apart at the rate of 673 mph (341 + 332) so the necessary time is 1616/673 = 2.4 hours or 2 hours and 24 minutes.
2007-11-20 17:59:09 · answer #2 · answered by Roger the Mole 7 · 1⤊ 0⤋
Since they are travelling in opposite directions, they are separating at a rate of (341 MPH + 332 MPH = 673 MPH)
At 673 MPH it would take them 1616 miles / 673 MPH = 2.4012 hours
So the answer would be 2.4 hours (rounded down).
Hope this helps! :)
2007-11-20 17:59:45 · answer #3 · answered by disposable_hero_too 6 · 1⤊ 0⤋
d istance = Rate * Time
Time = Distance / Rate
Opposite direction so add the mph 341 + 332 = 673 mph
T = 1616/673
2.4 hours
2007-11-20 17:58:37 · answer #4 · answered by Justin M 4 · 1⤊ 0⤋
1) jet 1 + jet 2=1616
rate*time of jet 1 + rate*time of jet 2=1616
2) (r)(t)+(r)(t)=1616
3) (341)(t)+(352)(t)=1616 (The time will be the same for both jets.
4) 341t+352t=1616
5) 693t=1616 Solve for t(time)
2007-11-20 17:59:11 · answer #5 · answered by Ed S 4 · 0⤊ 0⤋
341+332=673mph
X= 1,616m/673mph=2.4 hours
2007-11-20 18:03:29 · answer #6 · answered by Jorge R 6 · 1⤊ 0⤋
341t + 332t = 1616
673 t = 1616
t = 2.4 hr
2007-11-20 18:00:39 · answer #7 · answered by Anonymous · 1⤊ 0⤋
d= r*t
1616 = (341t) + (332t)
1616 = 673t
2.4 = t
2.4 hours
2007-11-20 17:59:33 · answer #8 · answered by tammi62505 2 · 1⤊ 0⤋
300m+332m=1616
then do the order of operations backwards (PEMDAS)
2007-11-20 17:57:17 · answer #9 · answered by i 3 · 0⤊ 1⤋