You can use greatest common factor(gcf)
list the factors of 18 and 30.
18- 1, 2, 3, 6, 9, 18
30- 1, 2, 3, 5, 6, 10, 15, 30
now the factor that is greatest is 6.
this mean you can use the largest square tile of 6in by 6in without overlap or cutting.
Answer:
1) 3 miles/h
2) 3 miles
Step-by-step explanation:
6 miles/2h = 3 miles/h
4h = 12 miles
3h = 9 miles
12 - 9 = 3
Ugh i have to write 20 characters or i cant post it but is A
sorry i gave a bad answer