2.In an examination 86% of candidates passed and 70 failed. How many
candidates appeared?
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Step-by-step explanation:
Let the number of people appear in exam=x
Person failed=70
Person passed =86% of x
= 86/100 x (x)
=43x/50
ATQ
=43x/50+70 =x
= 43x/50 - x = 70
= 42x/50 = 70
= 42x = 70 x 50
= x = 350/42
= x = 8.3
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