Ratio of boys to girls — Tables & Charts Aptitude Question
Ratio of boys to girls: | Stream | Boys | Girls | Total | |------------|------|-------|-------| | Science | 240 |… Answer and worked solution on CodeKairo.
- Topic: Tables & Charts
- Section: Data Interpretation
- Difficulty: Easy
- Time target: 50 seconds
Question
| Stream | Boys | Girls | Total |
|---|---|---|---|
| Science | 240 | 160 | 400 |
| Commerce | 180 | 120 | 300 |
| Arts | 80 | 220 | 300 |
| Total | 500 | 500 | 1000 |
What is the ratio of boys to girls in Science?
Options
- 2 : 3
- 3 : 2
- 4 : 3
- 3 : 4
Show the answer and the worked solution
Correct answer: B. 3 : 2
Worked solution
- 240 : 160 = 24 : 16 = 3 : 2.
Answer: 3 : 2.
The idea
Keep the order the question asks for: boys first, girls second. Reversing it gives 2 : 3, which is offered.
Shortcut. Boys outnumber girls in Science, so the first term must be the larger — that rules out 2 : 3 and 3 : 4; 240 : 160 ÷ 80 = 3 : 2.
Common trap. 2 : 3 — writing girls first; the question asks for boys to girls.