Sally and Hassan share a chocolate bar. Sally eats 1/4 of the chocolate bar and Hassan eats 2/5. How much more chocolate has Hassan eaten than Sally?

Answer 1

Let's first find out what fraction of the chocolate bar Hassan has eaten:
Since Hassan has eaten 2/5 of the chocolate bar, the fraction remaining is 1 - 2/5 = 3/5.

Now let's find out how much chocolate Sally has eaten:
Sally has eaten 1/4 of the chocolate bar.

The fraction remaining after Sally has eaten is 3/4.

Therefore, the difference in the amount of chocolate each has eaten is 3/5 - 3/4 = 12/20 - 15/20 = 3/20.

Hassan has eaten 3/20 more chocolate than Sally.