Answer:
586321
Step-by-step explanation:
x = 25.
Original cost per person:: 2000/x
Changed cost per person:: 2000/(x-5)
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Equation:: changed - original = 20
2000/(x-5) - 2000/x = 20
2000x - 2000x + 2000*5 = 20x(x-5)
10000 = 20x^2-100
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500 = x^2 - 5x
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x^2 - 5x - 500 = 0
(x+20)*(x-25) = 0
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Only positive root makes sense ====> x = 25.
ratio of vertical change between 2 points
Ok
