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hello salam kya ap plz mujhe thora sa help karsaktay hain. actully maine class eight ki maths ki book dekhi hai is main unit 6 named as pecentage mujhe uk ex 6.4 main issue ho raha hai actuaaly jo is example di gaye hai us ke according sirf us ex k pehle 5 qts solved huay hain ab masla yeh arha hai k baki solve nai horahay aur yeh samajh bhi naye arahi k example main 70000 aya kahan se plz help me out i am really in need of it