Given,
List price of table fan (MP) is = Rs 480
Retailer buys it at discount of = 25%
Cost price for the retailer is (75/100) × 480
So, CP = (75/100) × 480
= Rs 360
Now, the retailer sells the fan to get 15%
Gain% = (gain)/CP × 100
15% = (SP-CP)/CP × 100
SP = 115/100 CP
= 115/100 × 360
= 414
∴ The retailer should sell the fan at Rs 414 to get a gain of 15%.