Question
Download Solution PDFTotal number of students in different subjects of a college and percentage of girls and boys are shown in the below table.
Girls students and boys student are NOT having multiple subjects.
|
Subjects |
Number of Students |
Girls % |
Boys % |
|
Mathematics |
840 |
40 |
60 |
|
Chemistry |
220 |
70 |
30 |
|
Physics |
450 |
30 |
70 |
|
Biology |
200 |
80 |
20 |
What is the ratio of girl students of Mathematics and Chemistry to the number of boy students of Physics and Biology?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCalculation:
The number of girls student of Mathematics and Chemistry = 840 × 40% + 220 × 70%
⇒ 336 + 154
⇒ 490
The number of boy students of Physics and Biology = 450 × 70% + 200 × 20%
⇒ 315 + 40
⇒ 355
According to the question,
⇒ 490 : 355
⇒ 98 : 71
∴ The ratio of girl students of Mathematics and Chemistry to the number of boy students of Physics and Biology is 98 : 71.
Last updated on May 28, 2025
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