Assuming a woman of this population has a 20-year reproductive span (maximum time available from first to last birth), use these data to 1) calculate the maximum number of live births a woman could have, and 2) determine the number of births that will lead to the highest fitness (surviving children who marry) if we assume that all married children will have the same number of offspring


So I have data of 3 things
IBI (months) % of child survivorship % ever married


How do I get the answer
Please help me
I am really lost

This makes zero sense, sorry, and I have no clue what IBI is, or who gets married, parent or child, or why that matters, or how much time you are allowing between one birth and the next, and if twins etc count as one birth, and so on.