Question

A boy gets 3 marks for each correct answer and Loses 2 marks for each incorrect Sum. He does 24 sums and obtains 37 marks. what is the total number of Correct sums?

Answer 1

Let the total number of correct sums = x.

Then the total number of incorrect sums =24 - x.

Given that he gets 3 marks for each correct answer and loses 2 marks for each incorrect sum. and he obtained 37 marks.

3x - (24 - x) * 2 = 37

3x - 48 + 2x = 37

5x - 48 = 37

5x = 37 + 48

5x = 85

x = 85/5

x = 17.


Therefore the number of correct sums = 17.


Hope this helps!

Answer 2

hey friend here is your answer.