A candidate scoring 25% marks in an examination fails by 30 marks while another candidate who scored 50% marks get 20 marks more than those required to pass. the pass percentage is
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66.66% is the answer
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40%
Let p equal pass marks and X equal percentage of marks.
Case 1:
25% * X = p- 30
=>X/4 = p - 30
=>X = 4p - 120
Case 2:
50% * X = p + 20
=> X/2 = p + 20
=>X =2p + 40
Case 1 - Case 2=>
0=2p -160
2p=160
p = 80
Therefore, X =200
pass percentage equals=>
(80/200) * 100
=> 40%
Let p equal pass marks and X equal percentage of marks.
Case 1:
25% * X = p- 30
=>X/4 = p - 30
=>X = 4p - 120
Case 2:
50% * X = p + 20
=> X/2 = p + 20
=>X =2p + 40
Case 1 - Case 2=>
0=2p -160
2p=160
p = 80
Therefore, X =200
pass percentage equals=>
(80/200) * 100
=> 40%
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