In a software company 4/10 of people know C++, 2/4 of them know java, 2/8 of them know neither,find the total possibility to know C++? Choose the correct choice from the following.
A) 1/4
B) 1/3
C) 1/2
D) 2/3
E) 3/4
1/4ssume 100 persons in a company   person knows c++=4/10=100*4/100=20 persons   person knows java=2/4=100*2/4= 
<gadget id="calculator">100*2/4</gadget>
<output>50</output>
50 persons   neither=2/8=100*2/8= 
<gadget id="calculator">100*2/8</gadget>
<output>25</output>
25 persons   according to our assumption 100 person=20+50+25= 
<gadget id="calculator">20+50+25</gadget>
<output>95</output>
95 person covered(5 remaining)   so,total possibility=20 person(c++)+5(remaining)=25 persons   which is 25/100=1/4   1/4NSWER:1/4
<result>A</result>
In a software company 4/10 of people know C++, 2/4 of them know java, 2/8 of them know neither,find the total possibility to know C++?