45
5 divided by 5 equals 1
1 plus 4 equals 5
5 times 12 equals 45
If it is a ratio of 3:5 you are dividing 480 into 8 parts (3+5).
So divide 480 by 8: 480/8 = 60
Then the ratio is (3x60):(5x60) or 180:300
To check it is correct, add up the two parts to see that they come to 480:
180+300 = 480. All good.
Hope this helps
The least common denomonator is 60
B :) open circle means inequality and it needs to be at least 3 so the line has to increase, meaning the arrow is going right.
