Two out of every 12 students in a class say history is their favourite subject. There are 24 students in the class. How many stu
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Answer:
Step-by-step explanation:
To solve this problem you must:
1. Write the lenghts given in the problem in the same units.
2. Let's convert all the units to meters. Then:
537 km to m:
790 dm to m:
41 cm to m:
8 mm to m:
Now you rewrite them in increasing order:
Treating the data as a Venn set, it is found that:
- 26 students are good in mathematics only.
- 28 students are not good in any of the three courses.
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I am going to say that:
- A is the number of students good in Math.
- B is the number of students good in English.
- C is the number of students good in Psychology.
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9 are good in all of the three courses.
This means that:
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13 are good in both mathematics and psychology
This means that:
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15 are good in both mathematics and in English
This means that:
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16 are good in both English and psychology
This means that:
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20 are good in psychology
This means that:
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45 are good in mathematics
This means that:
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Question a:
, which means that 26 students are good in mathematics only.
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Question b:
At least one is:
Thus, 80 - 52 = 28
28 students are not good in any of the three courses.
A similar problem is given at: brainly.com/question/22003843