Compare the fractions by making the denominators of all the fractions same.
Book read by Balakrishnan is,
12=12×33
=36
Book read by Subhalakshmi is,
23=23×22
=46
Book read by Angela is 56.
The order of reading the book can be arranged as,
36<46<56
Therefore, the order from the one who read the book most of the least is,’
Angela, Subhalakshmi, Balakrishnan.