In an examination, A has scored 20 marks more than B. If B has scored 5% less marks than A, how much has B scored?
Let B scored m marks.
So, A scored m + 20 marks.
Let maximum marks be M.
According to the question, B has scored 5% less marks than A.
So, marks scored by B = (100 - 5)% of A
m = 95/100 × (m + 20)
100m = 95m + 1900
5m = 1900
m = 380
The correct option is B.