Hi, I am confused about how the amount of risk that is unexpired was calculated in part (b) of this example question within the notes... I was wondering if someone could help me by laying it out using a mathematical formula as I am quite confused on how the 75% was calculated here. Many thanks.
https://www.acted.co.uk/forums/index.php?threads/sp7-upr-question-on-page-13-of-notes.16390/ Or just draw a graph (should look like a triangle) of risk over the policy year, and find the area under the graph over the relevant periods.
