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 / kamal kumar das
total pass % of candidates in both subjects= 80%+70%=150% . but given 10% failed in both so 90% passed in both. given 90%=144then 1%=144/90 and 150%=144/90*150=240
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