Pie-chart shows the distribution of percentage of students in various courses. Total number of students is 1400.
Percentage-wise distribution of number of boys:
| Course | Number of boys |
| B.Sc Maths | 40% |
| B.Sc Physics | 68% |
| B.Sc Chem | 58% |
| B.Sc Sci | 80% |
| B.Com | 75% |
| BBA | 65% |
What is the ratio of number girls in B.Sc. Maths to number of boys in B.Sc. Sci.?
1
7 : 2
2
3 : 5
3
2 : 7
4
5 : 3