Let the cost price of the piano Amit bought be ₹x. Final selling price = Cost price ×(1+ Profit %∕100)×(1− Loss %∕100) Calculations: Akshay's price = Amit's cost price × (1+5∕100)×(1−25∕100) ₹1890=x×(1+0.05)×(1−0.25) ⇒₹1890=x×1.05×0.75 ⇒₹1890=x×0.7875 ⇒x=₹1890∕0.7875 ⇒x=₹2400