The price (p) of a commodity is first increased by k%; then decreased by k%; again increased by k%; and again decreased by k%. If the new price is q, then what is the relation between p and q?
p(104-k2)2 = q x 108
p(101-k2)2 = q x 104
p(104-k2) = q x 104
p(101-k2) = q x 108
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