A Shark Tank entrepreneur who won 250,000 realized previous contestants were doomed by the same type of question

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Wombi Rose, cofounder of LovePop, successfully earned an investment deal on "Shark Tank" in 2015.

He spoke with Business Insider about how he and his business partner prepared for their big pitch, and his advice is relevant for any budding entrepreneur.

He said knowing the financial details of his company inside and out was most important.

In the nine years "Shark Tank" has been on the air, we've seen hundreds of hopeful entrepreneurs pitch their ideas in front of a panel of celebrity investors, only for a fraction of them to actually land a coveted business deal.

But before they get an offer from the likes of Mark Cuban, Barbara Corcoran, Daymond John, or Kevin O'Leary, contestants on the show need to nail the sales pitch of their lives.See the rest of the story at Business InsiderNOW WATCH: Mark Cuban's advice for his 20-year-old self and millennials nowSee Also:A rumor that Melania Trump has a body double has been reignited after these images of her leaving Air Force One surfacedAmericans are obsessed with SUVs these are the ones everyone is buyingSkinnygirl CEO Bethenny Frankel explains how she used 'Real Housewives' to build a brand worth 100 millionSEE ALSO: Mark Cuban explains the steps any parent should take when their child has an idea for a business whether you think it's good or not

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