A clothing supplier stores 800 coats in a warehouse, of which 15 percent are full-length coats. If 500 of the short-length coats are removed form the warehouse, then what percent of the remaining costs are full length ?

Answer: Option D

Number of short length coats before removal :
= (100 - 15)% of 800
= 85% of 800
= $$\left(\frac{85}{100}\times 800\right)$$
= 680
Number of short length coats after removal :
= (680 - 500)
= 180
Total number of coats after removal :
= (800 - 500)
= 300
Number of full length coats removal :
= (300 - 180)
= 120
∴ Required percentage :
= $$\left(\frac{120}{300}\times 100\right)$$   %
= 40%