In a competitive exam there were 5 sections. 10% of the total number of students cleared the cut off in all the sections and 5% cleared none of the sections. From the remaining candidates 30% cleared only section 1, 20% cleared only section 2, 10% cleared only section 3 and remaining 1020 candidates cleared only section 4. How many students appeared in the competitive exam ?
Let total number of students=100x
10x=students who cleared the cut off in all the sections
5x=students who cleared none of the sections.
Remaining = 85x
Out of these 85x , 30% cleared only 1st section , 20% cleared only 2nd section, 30% cleared only section 3
Together they constitute 60% of 85x
Remaining= 40% of 85x =1020
On solving x=30
Total students=100x= 100*30=3000
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