Question

A scientist studied the migration patterns of two types of whales:

The humpback whale traveled 2,000 miles in 25 days.
The gray whale traveled 2,250 miles in 30 days.


Assuming the humpback whale travels the same distance each day, what is the unit rate for the humpback whale in miles per day?

Answer 1

80 miles per day

Explanation:

Let the unit rate be x miles per day for humpback whale

It means that in one day humpback whale travels x miles

Given that it traveled for 25 days

in 1 day humpback whale traveled = x miles

in 1*25 days humpback whale traveled = x*25 miles

Thus, in 25 days humpback whale traveled 25x miles

given that humpback whale traveled 2000 mile sin 25 days

thus,

25x = 2000

x = 2000/25 = 80

Thus, unit rate for humpback whale is 80 miles per day