1.

A test has twenty questions worth 100 marks in total. There are two types of questions, multiple choice questions are worth 3 marks each and essay questions are worth 11 marks each. How many multiple choice questions does the exam have? (A) 12 (B) 15 (C) 18 (D) 19

Answer»

Correct option is (B) 15

(x = MCQ , y = Essay type)

x + y = 20

3x + 11y = 100 

⇒ x = 15, y = 5



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