Since Marina is Samuel’s sister, she must be the daughter of Samuel’s mother.
Thus, Marina is the daughter of Samuel’s mother.
Read the following cartoon carefully.

Study the following question carefully and choose the right answer.
Statement: Should articles of only deserving authors be allowed to be published?
Arguments: \[\begin{array}{|c|l|}\hline (I) & \text{No, it is not possible to draw a line between the deserving and the undeserving.} \\ \hline (II) & \text{Yes, it will save a lot of paper which is already in short supply.} \\ \hline \end{array}\]

Arun’s present age in years is 40% of Barun’s. In another few years, Arun’s age will be half of Barun’s. By what percentage will Barun’s age increase during this period?