The answer is going to be 127% Hopes this helps :)
28.23 is the volume of something if the diameter is 2 cm and the height is 9 cm.
3 for 3.60 the unit price come out to 1.20
Amount spent on the last call = $25 - $22.04 = $2.96 = 296 cents
Number of minutes used for last call = 296 / 8 = 37 minutes.