hii Gaurav,

aapka jo b marks jyada hoga vahi calculate hoga.

JEE Main and Advance k rule ke according agar improvement dalne k baad agar aapke marks ghat jate hai to pahle vala marks ko final marks mana jaega ar agar badh jata hai to badha hua marks final marks mana jaega.

JEE main me paecentage calculation 5 subject k basis pe hota hai(total 500)

• physics
• chemistry
• mathematics
• language subject(agar aapka 2 language subject hai to better marks ko final mana jaega)
• any subject other than above(Isme bhi jisme sabse jyada marks aae hue rhenge vahi final mana jaega.)

hope you understand.

thank you