In the class of 40 students, 30 speak Tamil and 20 speak Telugu. What is the lowest possible number of students who
speak both the languages?	Options:  A) 8  B) 10  C) 20  D) 30  E) 32
let the student who speaks hindi-x   let the student who speaks english-y   as (xuy)-(xny)=total   30+20-(xny)=40   =10   10)
<result>B</result>
In the class of 40 students, 30 speak Tamil and 20 speak Telugu. What is the lowest possible number of students who
speak both the languages?