Algebra: 8th Grade; Equation Check
posted by Meaghan .
1) A private airplane leaves an airport and flies due south at 192 km/h. Two hours later a jet leaves at the same airport and flies due south at 960 km/h. When will the jet overtake the plane?
t = time
Equation:
192(t+3) = 960
2)An airplane flew for 4 hours with a 20km/h tail wind. The return flight against the same wind took 5 hours. Find the speed of the plane in still air.
r = rate in which the plane is moving
Equation:
4(r+20 = 5(r20)
3) It takes a passenger train 2 hours less time than it takes a reight train to make the trip from Central City to Clear Creek. The passenger train averages 96 km/h while the freight train averages 63 km/h. How far is it from Central City to Clear Creek?
On this one, I don't know.

Algebra: 8th Grade; Equation Check 
drwls
3) freight train's time = D/63
= D/96 + 2
D/63  D/96 = 33 D /6048 = 2
D = 12096/33 = 366.55 miles 
Algebra: 8th Grade (#1) 
drwls
1) You had the wrong equation on the first one. It should be
192(t+3) = 960t, where t is the time the jet plane leaves.
2) Your equation is ok here, if r is the speed in still air 
Algebra: 8th Grade; Equation Check 
Meaghan
I don't get number 3
and I am sorry, but I made a typo.
The freight train travels at 64 km/h.
If the passenger train takes 2 hours LESS time than it takes the Freight train to make the trip from Central Park to Clear Creek.
how is the equation:
D/63 = D/96 + 2
make sense.
shouldn't it be d/96 = d/64  2 ?? 
Algebra: 8th Grade; Equation Check 
drwls
With 64 instead of 63 you will get an integer answer, 12096/32 = 378. Do the math the same way.
d/96 = d/64  2 is basically what I wrote, but rearranged and with your corrected 64 in place of the 63. 
Algebra: 8th Grade; Equation Check 
aliyah
how do i slove this problem? y<3

Algebra: 8th Grade; Equation Check 
kennethia
what is 4w9(65w)=44;w=3

Algebra: 8th Grade; Equation Check 
Cody
1/2 times Y plus 3 = 15 What is the value of the Y
Respond to this Question
Similar Questions

PreAlgebra
A Jet airplane leaves an airport traveling at a steady rate of 600km/h. another jet leaves the same airport 3/4h later traveling at 800km/h in the same derection. how long will the 2nd jet take to overtake the first? 
algebra
Marty leaves the airport in his private plane and flies due east at 186 mph. Two hours later, a jet leaves the same airport and flies due east at 434 mph. When will the jet overtake Marty's plane? 
algebra question
Marty leaves the airport in his private plane and flies due east at 186 mph. Two hours later, a jet leaves the same airport and flies due east at 434 mph. When will the jet overtake Marty's plane? 
Algebra
A jet leaves the Charlotte, North Carolina, airport traveling at an average rate of 564 km/h. Another jet leaves the airport one half hour later traveling at 744km/h in the same direction. Use an equation to find how long the second … 
Algebra
A jet leaves the Charlotte, North Carolina, airport traveling at an average rate of 564 km/h. Another jet leaves the airport one half hour later traveling at 744km/h in the same direction. Use an equation to find how long the second … 
Math
A plane leaves an airport X, 20.6degrees east and 36.8 north degrees and flies due south along the same longitude for 8 hours at the rate of 1000km/h to another airport Y, 20.6degrees east and tita degree south. The plane then flies … 
algebra
A private plane leaves an airport and flies due east at 192 miles per hour. Two hours later, a jet leaves the same airport and flies due east at 960 miles per hour. How long will the private plane fly until it is passed by the jet? 
Math
An ordinary plane leaves an airport and flies due west at 180kph. Two hours later a jet leaves the same airport and flies due west at 900kph. How far from the airport will the jet overtake the ordinary plane? 
Marh
An ordinary plane leaves an airport and flies due west at 180kph. Two hours later, a jet leaves the same airport and flies due west at 900kph. How far from the airport will the jet overtake the ordinary plane? 
Algebra
An ordinary plane leaves an airport and flies due west at 180kph. Two hours later, a jet leaves the same airport and flies due west at 900kph. How far from the airport will the jet overtake the ordinary plane?