Leslie played Tetris yesterday. She said, "If you multiply my score by 6, then increase it by 45, then divide that answer by 3, you will get exactly 835.” What was
Leslie's score? Please explain step by step.

(6x+45)÷3=835

2x+15=835

2x=820

x=410

Lesile's score is 410

< 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⭐