Question

A migrating bird flies 468 miles in 13 hours. how many miles does it fly in 3 hours?

Answer 1

The answer is 108mi

Explanation:

to solve this problem, we need to write a ratio.

`(468mi)/(13hrs)`

to solve for 3 hours, we need to figure out how many miles the bird can fly in 1 hour. to do that, we need to divide the numerator and denominator by 13.

`(36mi)/(1hr)`

now we have a unit rate that represents distance covered per hour.

to solve for 3, we need to multiply the numerator and denominator by 3.

`(108mi)/(3hrs)`

the question is asking for miles. therefore, the bird can fly 108mi in 3 hrs.

hope this helps!

Answer 2

108 miles

Explanation:

For this problem you can create a proportion:

`(468 miles)/(13 hours)`

To find how many miles it flies in 3 hours, we need to find the unit fraction. Do this by making the denominator (bottom number) 1:

here, we must divide by 13:

`(468 miles)/(13 hours)`÷
`(13)/(13)`=
`(36 miles)/(1 hour)`

Each hour, they fly 36 miles.

To find how many miles they fly in 3 hours, make a proportion:

`(36 miles)/(1 hour)`=
`(x miles)/(3 hours)`

Then, solve:

use cross multiplication:

36·3=108

x·1=x

108=x