SOLUTION: Write the equation of variation.( inversely) The cost of a train ticket varies directly with the number of kilometers. A Trip costS Php 84; how much would a 320-kilometers trip c

Question 914338: Write the equation of variation.( inversely)
The cost of a train ticket varies directly with the number of kilometers. A Trip costS Php 84; how much would a 320-kilometers trip cost?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
C for cost, d for distance
p, a constant of proportionality for DIRECT VARIATION

Let C = 84 Php
Let d = 320 km

Php per km, the PRICE for each kilometer...

I made a couple small adjustments to your whole description plus question, but something is wrong with one, the other, or the two of them. Is Php 84 the price or the cost of the trip? Cost and price are not the same thing.
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