Shobha's mathematics test had 75 problems i.e 10 arithmetic, 30 algebra and 35 geometry problems . Although she answered 70 % of the arithmetic, 40 % of the algebra and 60 % of the geometry problems correctly, she did not pass the test because in algebra she got less than 60 % of the problems right . How many more questions she would have needed to answer correctly to score a 60 % passing grade.
plz tell step wise explanation . I'll mark u as a brainiest
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