Mental math is something that can be done i your head.
for example you can do 1+1 in your head and you dont need a calculator or paper to do it so i would be called mental math
Hope this helps
remember if you ever need anything and you dont want to waste points you can just post it on my pfp or message me the question
Answer:
Step-by-step explanation:
41 hour = 60 minutes
45 min / 60 min = 0.75 hour
170 mph * 0.75 hr = 127.5 miles flown
127.5 - 12.5 = 115
the plane is 115 miles north of the city
