In an examination ,a candidates gets 4 marks for a correct answer and -1 for a wrong answer .If a candidate attempts 35 questions and obtains 100 marks, find the number of questions answered correctly by the candidate.

Read the excerpt from gilgamesh: a new english version. gilgamesh backed away. he said,"how dreadful humbaba's face has become! it is changing into a thousand nightmarefaces, more horrible than i can bear. i feel haunted. i am too afraid to go on." §enkidu answered, "why, dear friend, do you speak like a coward? what you just saidis unworthy of you. it grieves my heartwe must not hesitate or retreat."