Omaha, Nebraska, is about 90 miles from Lincoln, Nebraska. Irania Schmidt must go to the law library in Lincoln to get a doc-
ument for the law firm she works for. Find how long it takes her
to drive round-trip if she averages 50 mph.
Start the solution:
1. UNDERSTAND the problem. Reread it as many times
as needed.
2. TRANSLATE into an equation. (Fill in the blanks be-
low.) Here, we simply use the formula d = röt.
distance
rate or
equals
(round-trip)
time
speed
✓ ✓
t
Finish with:
3. SOLVE and 4. INTERPRET