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80% pass in english, 70%pass in maths , 10%fail in both ,
144 pass in both . How many all appeared to the test?
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Answer Posted / kw
E: 80%, Fail in both: 10%, therefore only M pass is 10%
M: 70%, fail in both: 10%, therefore only E pass is 20%
100% = all fail + only E pass + only M pass + both E and M
pass
100%=10%+20%+10% + both E and M pass
Therefore, both E and M pass = 60%
60%=> 144
100% => 240
Answer: 240
| Is This Answer Correct ? | 79 Yes | 16 No |
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