MathematicsVariationJAMB
C is partly constant and partly varies as n. C = 500 when n = 10 and C = 800 when n = 20. Find the constant part.
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Answer: A. 200
C = a + bn: 10b = 300, so b = 30 and a = 500 − 300 = 200.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.