Question
If A varies directly as B and inversely as C and A = 10,
B = 5 and C = 7, what is the value of A when B = 8 and C = 7?Solution
Let the constant be x, According to the question, => A = x × B/C => 10 = x × 5/7 => x = 14 Now putting the value of A, => A = 14 × (8/7) => A = 16
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