Write the ratio in three different formats: in a year, there are 4 months that have 30 days. write a ratio of the months with 30 days to the months with other than 30 days. a.1 to 3, 1: 3, 1/3b.1 to 2, 1 : 2, 1/2
c.2 to 1, 2: 1, 2/1
d.3 to 1, 3: 1, 3/1

This problem is an example of ratio and proportion. A ratio is a comparison between two different things. You are given 4 months that have 30 days. You are required to get the ratio of the months with 30 days to the remaining months that have a different number of days. First, you will get the ratio as 4/30 = 2/15. Assuming that the other months also has 30 days. Then the second ratio is 8/30 = 4/15. Multiply 2/15 to 15/4 you will get ½. Other forms of this is 1:2 or 1 is to 2. The answer is B.

So find the amount of months that don't haave 30 days
12 months total
4 have 30 days
12-4=8
so the ratio of months that have 30 days to the months that do not havve 30 days is 4 to 8 or 4:8
this can be simplified like a fraction
4:8  4/8=1/2
ratio is
1 to 2, 1:2, 1/2

answer is B