Study the information carefully to answer the questions that follow:
In a school consisting of 2800 children, the ratio of girls to boys is 4 : 3 respectively. All the children have taken different hobby classes viz. Singing, Dancing, Painting, cooking. 20 percent of the boys take painting classes. The number of girls taking dancing classes is five-forth of the number of boys taking the same. One-fourth of the girls take cooking classes. The total number of students taking cooking classes 700. Two-fifth of the boys take singing classes and the remaining boys take dancing classes. The girls taking singing classes is half the number of boys taking the same. The remaining girls take painting classes.
The number of boys taking cooking classes is what percent of the total number of children in the school? (rounded off to two digits after decimal)
A 9.68 B 12.61 C 10.71 D 8.43 E None of these