Correct option is B
Let cost price of the article be Rs.100x
Marked price = 140% of 100x=Rs.140x
Selling price = 80% of 140x=Rs.112x
And,
New marked price =150% of 100x=Rs.150x
New selling price = 150x×88/100=Rs.132x
ATQ,
132x-112x=90
20x=90
x=4.5
Cost price of the article = 100x=100×4.5=Rs.450
Required value = 130% of 450=585