Wednesday, January 18, 2012

lol, wut?

Piravena must make a trip from A to B, then from B to C, then from C to A. Each of these three parts of the trip is made entirely by bus or entirely by airplane. The cities form a right-angled triangle as shown, with C a distance of 3000 km from A and with B a distance of 3250 km from A. To take a bus, it costs Piravena $0.15 per kilometer. To take an airplane, it costs her a $100 booking fee, plus $0.10 per kilometer. pair A, B, C;C=(0,0);B=(0,1250);A=(3000,0);draw(A--B--C--A);label("A", A, SE);label("B", B, NW);label(&qu...

To begin her trip she flew from A to B. Determine the cost to fly from A to B.

Half of that info was useless....
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