Astore item is originally priced at $80. the item goes on sale at a 25% discount. two weeks later that sales price is marked down an additional 10%. what is the current price of the item?

25% off 80 is 60 & 10% off 60 is 54.

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐

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