Question

Help pls thank you

Curtis kept track of the number of miles he ran each day for 10 days. By day 4, he had already run 9 miles.

How many days did it take Curtis to run 21 miles?



A.
7 days

B.
9 days

C.
25 days

D.
30 days

Answer 1

didnt say if he ran the same amount everyday

Answer 2

i got around 9 days but the answer was 20.99999997