Question

In a test, 5 marks are given for energy correct answer and (– 2) marks are given for energy wrong answer. Sudhir answered all the questions and scored 30 marks though he got 10 correct answers. Find the total number of questions in the test.

Answer 1

Answer:

20 questions

Step-by-step explanation:

correct answer marks = 10* 5= 50 marks

total marks he got = 30

we need to reduce 20 from than 50 marks,, so , 2(10) = 20 marks wrong answer

5(10) -2(x) = 30

x = 10 wrong questions

10 correct Q + 10 WRONG QUESTIONS= 20 questions