Genuis who solves this issue, Value of Camel

From the Genuis who solves this issue, Find the Value of the Camel using the given data.

If Value of
Cow + Sheep = 240
Goat + Camel = 500
Camel – Sheep + Goat = 455
Cow + Goat = 215
Then what will be the value of Camel ?

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Add line no 1 and 3
Camel - Sheep + Goat + Cow + Sheep = 455 + 240
Camel + Cow + Goat = 455 + 240
Replace value of cow + goat from data of Line 4
Camel + 215 = 455 + 240
Camel = 455 + 240 -215 = 455 + 25 = 480