एका परीक्षेमध्ये 70% विद्यार्थी पेपर 1 मध्ये उत्तीर्ण झाले. 60%
विद्यार्थी पेपर 2 मध्ये उत्तीर्ण झाले. 15% विद्यार्थी दोन्ही विषयात
अनुत्तीर्ण झाले तर 270 विद्यार्थी दोन्ही विषयात उत्तीर्ण झाले. तर
एकूण मुले किती?
1) 600 2) 580
(UPSC-2008)
3) 560 4) 540
Answers
Given :- In one exam 70% students passed in Paper 1.60% students passed in Paper 2. 15% students failed in both subjects and 270 students passed exactly in both subjects. So what is the total number of children ?
Answer :-
→ Failed in both = 15%
so,
→ Passed in both = 100% - 15% = 85%
now,
→ Passed in exactly two subjects = 70% + 60% - 85% = 130 - 85 = 45% .
then,
→ 45% ----------- 270
→ 1% ------------- (270/45)
→ 100% ---------- 6 * 100 = 600 (1) (Ans.)
Learn more :-
few children go to a park, if each child sits alone on a bench, there is one child left standing and if two children occ...
https://brainly.in/question/37181989
Given : एका परीक्षेमध्ये 70% विद्यार्थी पेपर 1 मध्ये उत्तीर्ण झाले. 60%
विद्यार्थी पेपर 2 मध्ये उत्तीर्ण झाले. 15% विद्यार्थी दोन्ही विषयात
अनुत्तीर्ण झाले तर 270 विद्यार्थी दोन्ही विषयात उत्तीर्ण झाले.
70 % students passed in paper 1 and 60 % passed in paper 2 . 15 % failed in both papers.
270 passed in both papers
To Find : एकूण मुले किती
Number of total students
1) 600
2) 580
3) 560
4) 540
Solution:
पेपर 1 मध्ये उत्तीर्ण = 70 %
Passed in paper 1 = 70 %
पेपर 1 मध्ये अनुत्तीर्ण =100 - 70 = 30 %
Failed in paper 1 = 100 - 70 = 30 %
पेपर 2मध्ये उत्तीर्ण = 60 %
Passed in paper 2 = 60 %
पेपर 2 मध्ये अनुत्तीर्ण =100 -60 = 40 %
Failed in paper 2 = 100 - 60 = 40 %
विद्यार्थी दोन्ही विषयात अनुत्तीर्ण = 15 %
Failed in both papers = 15 %
Failed in either of the paper = 30 + 40 - 15 = 55 %
Passed in both papers = 100 - 55 = 45 %
दोन्ही विषयात उत्तीर्ण = 100 - 55 = 45 %
45 % = 270
=> 100 % = 270 * 100/45 = 600
Total Students = 600
Learn More:
Using a Venn diagram find the number of a subset of a given set and ...
brainly.in/question/21285834
List all the elements of the given set: D = {x : x is a letter in the word ...
brainly.in/question/6487149