Percentage Practice Test 4 with solutions

Question : 27 of 40

Marks: +1, -0

Steve'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 she got less than 60% of the problems right. How many more questions she would have needed to answer correctly to earn 60% passing grade?

Validate

Solution:

The number of questions answered correctly by Steve =

70/100×10 +40/100×30 +60/100× 35

= 7 + 12 + 21 = 40
Required number of questions for pass =

60/100 ×75= 45

Hence, she needed to answer (45 – 40) = 5 questions more.

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