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Mohan gets 3 marks for each correct sum ...

Mohan gets 3 marks for each correct sum and loses 2 marks for each wrong sum. He attempts 30 sums and obtains 40 marks. The number of sums solved correctly is :

A

15

B

20

C

25

D

10

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem step by step, we can follow these instructions: ### Step 1: Define Variables Let: - \( c \) = number of correct sums solved by Mohan - \( w \) = number of wrong sums solved by Mohan
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