Efficiency of rail

With subsidies are business easy.

Calculate how much must cost rail ticket (x) in today's ticket price € 11 and if the trains was not subsidized, if it is known that without subsidies would cost three times today's ticket prices.

Calculate the value of today's ticket subsidies (y).

Correct result:

x =  33
y =  22

Solution:

x=311=33 Eurx = 3\cdot 11 = 33 \ \text{Eur}
y=31111=211=22 Eury = 3\cdot 11 - 11 = 2\cdot 11 = 22 \ \text{Eur}



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