exam Maths Puzzle Numerical Ability



1/2n+2/3m+1/2m+1/3n

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exam Other Question
Can someone help me on this problem?

I need to find the constant of variation k

m varies directly with n; m = 144 when n = 8

Thanks,
Ashley Is the conic section a curve formed by the intersection of two cones or just one? Or does it matter?