Question 1064085
A plane flying against the wind can make a 2200 mile journey in 75 minutes less than it could with the aid of wind. If it's avg speed is increased by 88 mph with the aid of wind, about how long did the journey take against the wind?
<pre>Let time it takes against wind be T
Then time it takes with the wind = {{{T - 75/60}}}, or {{{T - 5/4}}}, or T - 1.25 hours
We then get the following SPEED equation: {{{"2,200"/T = "2,200"/(T - 1.25) - 88}}}
2,200(T - 1.25) = 2,200T - 88T(T - 1.25) ----- Multiplying by LCD, T - 1.25 
{{{"2,200"T - "2,750" = "2,200"T - 88T^2 + 110T}}}
Continue solving for T to get a time AGAINST the wind of: {{{highlight_green(matrix(1,6, 25/4, or, 6&1/4, or, 6.25, hours))}}}