Karen walked three miles in 48 mins. Bob walked one mile further than Karen. If it took Bob 1 hour and 5 min to complete his walk, who walked at a faster rate?

(express as a unit rate please)

Karen

Step-by-step explanation:

Karens speed is 48/3 so 16 minutes per mile. (0.0625miles/min)

Bob walked 4 miles (3+1), which took him 65 minutes (60+5))

This means that his speed is 65/4 so 16 minutes and 15 seconds per mile. about 0.0615miles/min

This means that Karen aren walked at a faster rate.

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

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step-by-step explanation:

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