Answer: [tex]\frac{623}{d}[/tex] km
Step-by-step explanation:
Let in one day Ethan rollerbladed x km.
And, According to the question,
In each day he rollerbaded the same distance,
Thus, in d days, he rollerbladed = d × x = dx km
But, Again according to the question,
He rollerbladed a total of 623 km over d days.
⇒ d x = 623 km
⇒ x = 623 / d km
Thus, He rollerbladed in a day = [tex]\frac{623}{d}[/tex] km
