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Sagot :
There are 35 total questions. You already know that 20 of the questions are worth 2 points. You subtract 20 from 35. 35-20=15. So 15 questions are worth 4 points.
Total questions~35. Worth 2 points~20. Worth 4 points~15.
Total questions~35. Worth 2 points~20. Worth 4 points~15.
20 questions are worth 2 points and 15 questions are worth 4 points.
Let x represent the number of problems worth 2 points and y represent the number of problems worth 4 points.
The test will consist of 35 questions. Hence:
x + y = 35 (1)
There are 20 questions worth 2 points, hence x = 20:
x + y = 35
20 + y = 35
y = 15
Therefore 20 questions are worth 2 points and 15 questions are worth 4 points.
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