You deposit $800 in a bank account for 2 years that earns a 4% simple interest.
How much interest is earned on the bank account?
How much money is in your bank account after 2 years?

Step-by-step explanation:

P = $ 800

r = 4%

t = 2 years

= $64

Money in the bank after 2 years = 800 + 64 = $864

< 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⭐

1/800 is the right answer