You are correct! My apologies, I used the wrong fraction for the number of pupils who like Mathematics. Let me correct Q2. (b) i).
Q2. (b)
i) How many girls like Mathematics?
Total pupils in the school = 360.
Pupils who like Mathematics = 107×360
PupilswholikeMathematics=7×36=252
Half of those pupils who like Mathematics are girls.
Girls who like Mathematics = 21×252
GirlswholikeMathematics=126