Question

Ian ran 12.2 in the morning. After​ lunch, he continued running. When he finished the​ run, he had covered 31.5 km in all. Write an equation that can be used to find how far Ian ran after lunch

Answer 1

31.5-12.2= x

Explanation:

If he already ran 12.2 km, then ran after lunch and in total ran 31.5 km, the answer would be the part he didn't run. You can find that out by subtracting what you know he already ran from the total.