Question

In a test, a candidate attempted only 8 questions and secured 50% marks in each of the questions. If he obtained a total of 40% in the test and all questions in the test carried equal marks, how many questions were there in the test?

Answer 1

Let's say that 1 full answer gives 2pts.
So if we have 8 questions - then full answer gives 16pts, but candidate secured only 50% of this points. So candidates earn 8pts.
8 pts gives him 40% total. So:
8pts - 40%
xpts - 100%
Then:
40x = 800
x= 20
Answer is 20 questions 

Answer 2

he attempt 8 questions outoff that he got 50 %of that

so 4 questions mark he got

he got 40% in the test

40% = 4 questions

so

100 % = 10 questions