SOLUTION: Helped by a strong jet stream, a Los Angeles-to-Boston plane flew 10% faster than usual and made the 4400 km trip in 30 min less time than usual. At what speed does the plane usual

Question 365086: Helped by a strong jet stream, a Los Angeles-to-Boston plane flew 10% faster than usual and made the 4400 km trip in 30 min less time than usual. At what speed does the plane usually fly?
I tried a chart but I don't think I set it up right.
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!



Hi, 

Let x represent the speed the plane usually flies

d = r*t

4400km = x*t

t = 4400/x

4400km = (x + .10x)(t -.5hr)

4400km = 1.10x(4400/x -.5hr)

4400km =4840-.55hr*x 

.55x = 440

x = 800km/hr 

RELATED QUESTIONS

Helped by a strong jet stream, a Los Angeles-to-Boston plane flew 10% faster than usual... (answered by josmiceli)
Please help me with this problem: Helped by a strong jet stream, a Los Angeles-to-Boston... (answered by stanbon)
Helped by a strong jet stream, a Los Angeles-to-Boston plane flew 10% faster than usual... (answered by ankor@dixie-net.com)
Helped by a strong jet stream, a LA to Boston plane flew 10%faster than usual and made... (answered by ankor@dixie-net.com)
Hi could you please solve this problem for me. I don't understand how to set it up.... (answered by venugopalramana)
I've tried to set this up, yet I have no idea on how to solve it.
"Helped by a strong... (answered by Mathtut)
Hindered by a strong wind, a jet flew 15% slower than usual and made a 4000 mile trip in... (answered by stanbon,josmiceli)
A plane flying with the jet stream flew from Los Angeles to Chicago, a distance of 1200... (answered by checkley77)
A plane flying with the jet stream flew from los angeles to chicago, a distance of 2250... (answered by oberobic)