Answer:
The division was completed in the incorrect order.
Step-by-step explanation:
Since the fraction was 5 over 8 or 5/8, Alejandro is suppose to DIVIDE 5 BY 8.
That would then be 0.625 and 62.5% in percentage form.
In addition to Alejandro's error, his resulting percentage is above 100%. So this is false since it is a non-mixed fraction.