A marathon is 42.2 kilometers. If a runner has completed 30 km, how much farther to go?
Answer
12.2 kilometers
How to solve it
1
Total distance: 42.2 km
2
Distance completed: 30 km
3
Remaining: 42.2 - 30 = 12.2 km
Hints
What is the total distance?
How far has the runner gone?
Subtract to find the remaining distance