Mr. walker was hiking across massachusetts. he has three days to cover 70 miles. on the first day, he walked 6 hours at a speed of 4 mph. on the second day he walked the same number of hours, but his speed was only 3 mph. on the third day, he walked 8 hours to cover the remaining distance. what was his speed on the third day?

So 6 hours at 4 miles per hour
4 miles per hour means 4 mieles in one hour
6 hours
distance=time times (distance pers unit of time)
distance=6 times 4=24

second day
same number of hours=6
speed=3

distance=time times (distance per units of time)
distance=6 times 3=18

so we add 1 and 2 days together
24+18=42
so he has covered 42 mles
he eed to cover 70
70=42+rest
subtract 42
28=rest

so he traveled 28 miles on third day
in 8 hours
sppeed=distance divided by time
time=8
distance=28
28/8=14/4=7/2=3 and 1/2 miles per hour=3.5 miles per hour

answer is 3.5 miles per hour

For the first question the answer is a, for the second c, for the third d, for the 4th b, for the 5th a