Will I lose weight if I cycle, skip and dance?

I have to lose 20-25 kgs in 6 months! So for how much time do I cycle? I have the indoor cycle, the one that is in the gym which is just in one place so I have that in my house so for how much time?20 minutes? 40 minutes? How many skippings? And for how much time do I dance?
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Is 20-25 minutes of cycling and 40-60 minutes of dancing good enough for everyday?
Will I lose weight if I cycle, skip and dance?
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