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What is the Bond energy (In kJ/ mol) of ...

What is the Bond energy (In kJ/ mol) of `C-H` in Methane from the following data?
`{:(DeltaH_(f) [CO_(2)(g)],,= -394 "kJ/mol"),(DeltaH_(f)[H_(2)O(l)],,= -285 "kJ/mol"),(DeltaH_("siblimation"){"Carbon (graphite)"},,=+716"kJ/mol"),(DeltaH_("combustion")[CH_(4)(g)],,= -890 "kJ/mol"),("Bond energy" (H-H),,=435"kJ/mol"):}`

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The correct Answer is:
`415 kJ//mol`
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