(3) study the insolation curves in relation to the annual curve of the subsolar point. compare times of maximum and minimum values at 60°n and 40°s. explain how these two curves differ in timing based on the annual curve of the subsolar point.

2 over 5

step-by-step explanation:

the 2: 3 ratio is the length of the ac segment to the cb segment total length. this implies that the ratio between segment ac length and segment ab length is 2: 5. point c is 2/5 from a to b, so the required fraction is 2/5.