Pie-chart shows the distribution of the percentage of students in various courses.
The total number of students is 1400
Percentage-wise distribution of the number of boys:
| Course | Number of boys |
| B.Sc Maths | 40% |
| B.Sc Physics | 68% |
| B.Sc Chem | 58% |
| B.Sc C.Sci | 80% |
| B. Com | 75% |
| BBA | 65% |
What is the ratio of number of girls B. SC. Maths to number of boys in B. Sc. C. Sci.?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e 3 : 5.
| Course | Percentage of number of students | Number of students | Percentage of Boys | |
|
B.B.A |
13% | 182 | 65% | |
| B.Sc maths |
20% |
280 | 40% | |
| B.Sc physics | 10% | 140 | 68% | |
| B.Sc chemistry | 12% | 168 | 58% | |
| B.Sc C sci | 25% | 350 | 80% | |
| B.Com | 20% | 280 | 75% |
The number of girls in B.Sc maths = 60% of total
⇒ 60/100 × 280 = 168
The number of Boys In B.Sc C sci = 80% of 350 = 280
Required ratio = 168 : 280 = 3 : 5.