Multiple choice general knowledge math & puzzles

if a person is having x kg of sugar. if he sells sugar such that a person has to take half of sugar he is having + 1/2 kg extra. after selling to 4 people he is left with no sugar. find the value of x.

  1. 20

  2. 16

  3. 15

  4. data insufficient

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Work backward from 0. Person 4: $(0 + 0.5) imes 2 = 1$. Person 3: $(1 + 0.5) imes 2 = 3$. Person 2: $(3 + 0.5) imes 2 = 7$. Person 1: $(7 + 0.5) imes 2 = 15$. Thus, the person started with 15 kg of sugar.