Why is it important to eat a full healthy meal before an afternoon of playing sports

It is important to eat a 'full healthy meal' before an afternoon of playing sports because by eating healthy food before a workout, performance and energy levels will be better and higher. This is because the food consumed is converted into energy by the body, which in turn helps in better performance. Healthy food also a better source of energy than junk food.

This is what i did 45-5=4040÷4=10so there are 10 white marbles but am not sure is just a question that am not sure