SOLUTION: If a test has 60 questions, how many questions do I have to get correctly to obtain a 70 percent?
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Question 518410
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If a test has 60 questions, how many questions do I have to get correctly to obtain a 70 percent?
Answer by
christin(1)
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set them up as fractions.
(60/100)(x/70)
cross multiply
(60)(70)= 4200
divide by 100 to misolate X
x=42