Question

Mitzi commutes 8 miles from her home to Valencia. What would an equivalent commute be in kilometers?
Round off your decimal answer to 2 decimal places. Enter only significant zeros.

Answer 1

@SalvadorV

Answer 2

we know that 1 mile=1.609 kilometers, so you just have to make a rule of three.
How would you do that?

Answer 3

I have no idea.

Answer 4

Round trip is 16 miles
There are 1.61 miles per km.
Multiply and prosper.

Answer 5

what you do is, if 1 mile is 1.609 kilometers you need to know how much is 8 miles, so what you have to do is increase both by the same amount
if 1 mi= 1.609 km
then 2 mi= 3.218 km
you can do that with any number, for example 5
1 mi = 1.609 km
1*5 mi =1.609*5km, so 5 miles = 8.045

Answer 6

how would you do that with 8 miles?

Answer 7

I got 12.872

Answer 8

@SalvadorV

Answer 9

awesome! that is correct

Answer 10

now to roud it to the decimal

Answer 11

how would you round that as I told you?

Answer 12

12.87 ?

Answer 13

16 x 1.61 = 25.76 km round -trip commute
8 x 1.61 = 12.88 one-way

Answer 14

yup, 12.87 :D

Answer 15

wait but he said its 12.88 ???

Answer 16

so which one.

Answer 17

@SalvadorV @douglaswinslowcooper

Answer 18

he rounded it from the beginning, we rounded at the end, the result is a bit different, but I believe your teacher won't mind, it's up to you which one you prefer

Answer 19

its not my teacher its an online quiz so now which one is a better choice.lol

Answer 20

I'm not sure, is it multiple choice?

Answer 21

nope.

Answer 22

Did not realize your situation
one-way d = 8 x 1.609=12.872 rounds to 12.87
if start with 1.61 km/mi, then you get my 12.88

Answer 23

I guess both can be right :D