80% students passed in maths, 70% students passed in english and 20% students failed in maths and english, if totally 450 students failed, how many students are there in overall
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Answer:
1500
Step-by-step explanation:
Failed in maths = 100 -80 = 20%
Failed in english = 100-70 = 30%
Failed in both = 20%
Failed in any subject = 20 + 30 - 20 = 30%
30% of Students = 450
Students = 450*100/30 = 1500
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