 
<translate> Jimlar shekarun dalibai shine 14X10 = 140 Shekaru Yawan shekarun malami = 15X (10+1) = 165 Saboda haka, shekarun Malamin 165-140 = 25 Yrs Akwai gajerar hanya ga irin wannan matsala Shekarar malamin ita ce 10+(15X1) = Shekaru 25 Don haka amsar ita ce (E). <eng> Total age of students is 14X10 = 140 Years
Total age inclusive of teacher = 15X (10+1) = 165
So, Teacher's age is 165-140 = 25 Yrs
There is a shortcut for these type of problems
Teacher's age is 10+(15X1) = 25 Years So the answer is (E). 