SOLUTION: in an examination , a student attempted 15 questions correctly and secured 40 marks. if there are two types of questions ( 2 ,marks and 4 marks questions.how many questions of 2,ma

Question 838655: in an examination , a student attempted 15 questions correctly and secured 40 marks. if there are two types of questions ( 2 ,marks and 4 marks questions.how many questions of 2,marks did he attempt
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi,

Let x represent number of 2 mark questions 

 2x + 4(15-x) = 40 ****

     20 = 2x

      x =   2 mark questions 

CHECKING our answer***

 20 + 4*5 = 40marks 

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