| Directions: Study the following information carefully to answer the questions. [IBPS (SO) IT 2014] |
| There are 3 engineering specialisations offered by college A, namely Computer Science, Electrical and Mechanical and two management specialisations namely HE and Marketing. The total number of students studying Engineering specialisations is 2/3rd of the total number of students studying in college A. The total number of students studying Computer Science Engineering is 32% of the total number of students studying Engineering applications. |
| The total number of students Mechanical Engineering is 2400 which is 600 more than the total number of students studying Computer Science Engineering. The total number of students studying Marketing is 112 more than the number of students studying HR. |
| What is the respective ratio between total number of students studying Mechanical and Electrical Engineering together and the number of students studying Marketing? |
A) 34 : 13
B) 34 : 11
C) 35 : 13
D) 31 : 15
E) 31 : 12
Correct Answer: A
Solution :
| Required ratio \[\text{=}\,\,\frac{\begin{align} & \text{Total}\,\text{number}\,\text{of}\,\text{students}\,\text{in } \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\text{(Mechanical+Electrical)} \\ \end{align}}{\begin{align} & \text{Total}\,\text{number}\,\text{of}\,\text{students } \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\text{in marketing} \\ \end{align}}\] |
| \[\text{=}\,\,\frac{2400+1425}{1462}=\,\,\frac{3825}{1462}=\,\,\frac{225\times 17}{86\times 17}\] |
| \[=\frac{225}{86}=\frac{34.61}{13.23}\approx \frac{34}{13}=34:13\] |
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