This is simply a case of division. since you already know that the bird is flying at 45 kilometres per hour, you should be able to devise that every hour the bird is going 45km
we are gonna use ratio for this
1:45
?:1800
first of all divide 1800 by 45, to find the number you are gonna multiply the other number by, secondly multiply ur answer by 1 since that is the number of hours it takes to for the bird to travel 45km, after u have suceeded in doing this, you already have ur answer which is 1800 divide by 45 times 1
