Answer: 1 hour
Step-by-step explanation:
1st trip = 4mph
12 mi / 4 mi
12 mi = 3 hrs
2nd trip = 6 mph
12 mi / 6 mi
12 mi = 2 hrs
3hrs - 2 hrs = 1 hr
make S the subject
A) 6¢
B) 9¢
Eliminate
C) 11¢
D) 14¢
Answer:6€
Step-by-step explanation: