math
posted by Tiffany on .
Erica took 2 days to drive 1,020 miles. On the first day she drove 10 hours at an average spped of 62 mile per hour. on the second day, her average spped was 57 miles per hour. approx. how long did she drive on the 2nd day?

distance=avgvelocity*time
1020=10*62 mi+57*t
solve for time, t.