Question

Jill is going to run a 5 kilometer race. If 1 kilometer is approximately 5/8 mile, how many miles long is the race

A. 2 1/2 miles. C. 3 1/3 miles


B. 3 miles. D. 5 miles

Answer 1

For this case we propose a rule of three:

1km --------------->
`\frac {5} {8}` miles

5km ---------------> x

Where the variable "x" represents the amount of miles equivalent to 5 kilometers.

`x = \frac {5 * \frac {5} {8}} {1}\\x = \frac {25} {8}\\x = 3.125`

Thus, the race has approximately 3,125 miles, which we can round to 3 miles.

ANswer:

Option B