human
Bob, a marathon runner, is preparing for a race. He runs a total of 70 miles in the 3 days leading up to the race. On day one he runs 20 percent of the total miles and on day 2 he runs 50 percent of the remaining miles. How many miles does he run on day three to complete the 70 miles?
assistant
How many miles does Bob run on Day 1? ** Day 1: 70(.20)=<<70*.20=14>>14 miles
How many miles does Bob have left after Day 1? ** 70-14=<<70-14=56>>56 miles remaining
How many miles does Bob run on Day 2? ** Day 2:56/2=<<56/2=28>>28 miles
How many miles does he run on day three to complete the 70 miles? ** 56-28=<<56-28=28>>28 miles remaining
#### 28