Question 70536
A plane took 1 hour longer to travel 560 miles on the first portion of a flight than it took to fly 480 miles on the second portion. If the speed was the same for each portion, what was the flying time for the second portion of the trip?

480/t = 560/t+1  You set this up right!!!! :-)
{{{480/t=560/(t+1)}}}  
Cross multiply, or multiply both sides by the LCD: t(t+1)  which ever method you prefer.  I'm going to multiply both sides by the LCD because it's easier to show you what I'm doing.
{{{t(t+1)(480/t)=t(t+1)(560/(t+1))}}}
{{{cross(t)(t+1)(480/cross(t))=t*cross((t+1))(560/cross((t+1)))}}}
{{{(t+1)(480)=t(560)}}}
{{{480(t+1)=560t}}}
{{{480t+480=560t}}}
{{{480t-480t+480=560t-480t}}}
{{{480=80t}}}
{{{480/80=80t/80}}}
{{{6=t}}}
{{{highlight(t=6)}}}hrs.
Happy Calculating!!!