65
780 / 12 = 65
78
780 miles in 12 hours would mean he's going 65 mph. 780 divided by 12 is 65. So he would do 455 miles in 7 hours. 455 divided by 65 is 7.
195
0.009
The answer is 780 780/65=12 780/26=30 780/12=65 780 is the lowest common multiple that each of the numbers all have in common.
260
5.7
Yes. 780 divided by 10 is 78.
0.0962
780 by 10