Question 1210145
.


The problem in the post is written  INCORRECTLY.


Indeed,  it says  " B=10 ".


But  'B'  is the point,  and writing  " B=10 "  makes no mathematical sense.


Since the problem is written so inaccurately, we can not accept it for execution.


I am very disappointed to see such inaccurate writing.



In Mathematics, respect for the reader means writing accurately. 
Inaccurate writing is treated as disrespect for the reader.