How many kilometers have you traveled if you have driven 400 miles?

Question

How many kilometers have you traveled if you have driven 400 miles?

Answer 1

to get an approx answer quickly  multiply by 100 and divide by 60= 666kms

Answer 2

640km

Answer 3

250 Kilometers

Answer 4

The conversion factor is 0.62 miles to 1.00 kilometres.  In this case, you can divide 400 by 0.62, giving 645.2 kilometers.

Note that kilometers are smaller than miles, so the answer has to be great than 400!