Explanation:
just ignore the % sign and answer :
is 1/2 equivalent to 50 ? yes or no ?
no, of course.
1/2 = 0.5
50 = 50
clearly they are different.
Sam is confused, because 50% = 1/2 = 0.5.
but 50% is NOT 1/2%
1/2% is half of 1%, which by itself is 1/50 of 50%.
1/2% = 1/50/2 of 50% = 1/100 of 50% =
= 0.01 × 0.5 = 0.005