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October 20, 2014

October 20, 2014

Posted by **Tim** on Friday, October 14, 2011 at 6:48am.

An airplane flies from New Orleans, Louisiana, to Atlanta, Georgia, at an average rate of 320 miles per hour. The airplane then returns at an average rate of 280 miles per hour. The total travel time is 3 hours.

A. Define a variable for the flying time from New Orleans to Atlanta. Write an expression for the travel time from Atlanta to New Orleans.

B. Write and solve an equation to find the flying time from New Orleans to Atlanta.

- Algebra -
**Reiny**, Friday, October 14, 2011 at 8:05amYou are going to use the formula

distance = rate x time

time = distance/rate

A) let the time taken for NO to A flight be t hrs

then time taken for A to NO flight is 3-t hrs

B)

320t = 280(3-t)

320t = 840 - 280t

600t = 840

t = 840/600 = 1.4

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