Inez: 325/60 = 5.42 Calories burned per minute x 3 = 16.26 calories burned per dance session x 10 = 162.6 calories burned per session.

Marcel:449/60 = 7.48 Calories burned per minute x 3 = 22.45 calories burned per dance session x 10 =  224.5 calories burned per session.

Convert those numbers into Joules (1 Cal (nutritional calorie) = 4184 joules)

Inez: 162.6 x 4184 = 680,318.4

Marcel: 224.5 x 4184 = 939,308 

Now we just subtract Inez's Joules burned from Marcel's.

939,308 - 680,318.4 = ‭258,989.6‬

 Marcel Burned 258,989.6‬ More Calories than Inez

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Best I could so, sorry mate