Tom can run 3.4 times as fast as he walks. The difference between the speed at which Tom walks and runs is 6.96 km/h. How fast does Tom walk?

a. 2.05 km/h
b. 2.9 km/h
c. 9.86 km/h
d. 23.664 km/h

< 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⭐