Audrey has to take two math tests to pass 6th grade. She must correctly answer 70% of the total questions to move on to the 7th grade. The first test has 70 questions and she gets 60% of them correct. The second test has 40 questions. How many questions does she need to get right on the second test to move onto the 7th grade?
Please reason step by step, and put your final answer within \boxed{}.
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