Total chapatis = 8
Rohit eats = 4 or 1/2 part
∴ Fractlon = 1/2 or = (2 x 1)/(2 x 2) = 2/4
Rohini eats = 1/4 part
∴ Fraction = 1/4
∵ In both unit fractions 1/2 and 1/4, fractions with denominator 2 will be greater and fraction with denominator 4 will be smaller.
Thus, Rohini ate less.