What information is missing but is needed to solve this problem?

The Jackson family took a three-day trip. They drove 426 miles the first day and 387 miles the third day. How many miles did they drive on the second day?

A.
the total number of miles driven for the first and third days

B.
the difference between the number of miles driven on the first and third days

C.
the total number of miles driven for the three days

D.
the average number of miles driven on the first and third days

Question

What information is missing but is needed to solve this problem? 
 
The Jackson family took a three-day trip. They drove 426 miles the first day and 387 miles the third day. How many miles did they drive on the second day?
 
 A.
the total number of miles driven for the first and third days
 
 B.
the difference between the number of miles driven on the first and third days
 
 C.
the total number of miles driven for the three days
 
 D.
the average number of miles driven on the first and third days

texaschic101 · Answer

you need the total number of miles driven in total.....answer C