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Number of questions attempted correctly = (70% of 20 + 40% of 60 + 60% of 70) ⇒ (14 + 24 + 42) = 80. Questions to be answered correctly for 60% grade= 60% of 250 = 150 So, Required number of questions= (150 – 80) = 70
The unitarist perspective assumes that:
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The fourth proportional to 10, 40, and 15 is complete it?
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