What is 50% of 80?

To find 50% of a number, you can multiply that number by 0.5 or divide it by 2. In this case, 50% of 80 can be calculated as follows:

1. Multiply 80 by 0.5: ( 80 \times 0.5 = 40 ).

2. Alternatively, you can divide 80 by 2: ( 80 \div 2 = 40 ).

Both methods yield the same result, confirming that 50% of 80 is indeed 40. This is why the correct answer is 40, as it represents exactly half of the original quantity, which aligns with the concept of calculating percentages.