Answer:
17m
Step-by-step explanation:
Add up 4m and 4.5m. 8.5
Multiply that number by 2. 17
If it takes an hour to fill 1 tank in 1 hour 1 tank will be full
Lets check
47 times 7 is not equal to 315
47 times 5 =235
47 times 9 is not equal to 235
alishas speed is 47 mph