A 737 carries 100 passengers on a flight from NYC to Los Angeles. 50% of the passengers weigh y, and and 50% percent weigh x. It costs 80% less fuel to fly x passengers. Its costs $8 dollars a mile to fly y passengers. How much more money does it cost to fly y passengers, in a trip of 2,950 miles?
(8 x 50) x 2950 = $1,180,000, and $1,180,000 - 80% = $236,000,
it costs $944,000 more to fly y passengers $944,000