Cory has $20.00 and she wants to buy two packs of candies that cost $49.00 each. How much money does Cory need so she will be able to buy the pack of candies? Let's be accurate as possible.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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The two packs of candy cost $49 x 2 = $98. Therefore, Cory needs $98 - $20 = $78 to be able to buy two packs of candy.
The answer: 78.