Answer:
17 million
Step-by-step explanation:
1.15 miles closer
you just subtract 1 3/5 from 2 3/4
1 3/5 = 1 12/20
2 3/4 = 2 15/20
2 15/20- 1 12/20 = 1 3/20 = 1.15
31 as it has only 2 factors which is 1 and 31
