Video narration
Kya dukaan ke label par 20% aur phir 10% ki chhoot ko jodkar seedha 30% maan sakte hain? Kyunki pehli nazar mein lagta hai ki dono chhooten usi 100 dollar par lagi hain. Lekin successive discount mein agli chhoot pehle se bachi keemat par lagti hai. Maan lijiye mool keemat 100 dollar hai. 20% off yani 80% bacha, isliye pehli chhoot ke baad keemat 80 dollar hui. Ab doosri 10% chhoot 100 par nahin, isi 80 dollar par hai. 90% bachta hai: 80 guna 0.90, yani 72 dollar. 30% jodne wala shortcut keemat 70 dollar batayega, lekin is sale label mein sahi final price 72 dollar hai. Isliye kul kami 28% hai, 30% nahin. Saamanya niyam: har chhoot ke baad bachi keemat ko agle bache hue pratishat se guna karo. To jawab hai - nahin. 20% aur 10% milkar 28% ki chhoot dete hain, kyonki doosri 10% pehle ghate hue daam par lagti hai.