Divide £360 into a ratio of 1:4

A ratio can also be written as a fraction, so 1:4 can also be 1/4. When you look at it like this, it's a lot easier to see that all this question is asking for is one-fourth of 360, which is 90. This makes sense because the ration of 90:360 simplifies into 1:4

Iknow one of the answers is a and maybe b but not 100% sure about b