Two crore candidates applied for various posts in an examination conducted by RRB (Railway Recruitment Board) candidates failed. How many candidates passed in the examination?
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Let the failed candidates no. be x and no. of passed candidates be 2x.
x+2x=20000000
x=20000000
x=20000000/2
x=10000000
To find the no. of failed candidates from 2 crore candidates, we let them x. We had taken the no. 2x beacuse the second x be followed double of first x, so it will be 2x.
I hope it's helpful.
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