यदि 15% लाभ और 15%हानि का अंतर 450 हो तो करय मूल्य है
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Answer:
let profit = 100+15=115
let loss=100-15=85
if 1=x
profit=115x
loss=85x
115x-85x=450
30x=450
x=450
9 is ans
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