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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 / wajahat hussain
pass English =80%
fail=100-80=20%
pass Math = 70%
fail in Math=100-70=30%
fail in both=10%
total fail students= fail in Eng+fail in Math-common
= 20+30-10=40%
if 40% fail then 60% will pass
let total students=x
hence
60% 0f (total students)=144
60/100 of (x)= 144
x=(144x100)/60
X=240
total students=240
| Is This Answer Correct ? | 269 Yes | 17 No |
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