Adnan trades Umar 100 pennies for 10 dimes.Later,when Adnan wants to trade back,Umar refuses,because he says he has much more money than Adnan,and won't trade for only 10 puny dimes.Apparently,Umar has not yet mastered

Question

Quizplus · Accepted Answer

Umar is unable to understand that the 10 dimes received from Adnan are equivalent in value to the 100 pennies he had initially given to Adnan. This reflects a lack of understanding of the concept of reversibility, which allows children to mentally reverse an action in order to understand that it can be undone.

Adnan Trades Umar 100 Pennies for 10 Dimes