Final answer:
To write 80% as a fraction, divide 80 by 100 to get 0.8, then simplify the fraction to 4/5.
Step-by-step explanation:
To write 80% as a fraction, we can first convert the percentage to a decimal by dividing it by 100. So, 80% is equal to 80/100 or 0.8. Then, we can simplify the fraction by dividing both the numerator and the denominator by their greatest common divisor. In this case, the greatest common divisor of 80 and 100 is 20, so the simplified fraction is 4/5.
Learn more about Converting percentages to fractions