Calculate the rate of spreading per year between each pair of islands that corresponds to the separation distance and the age difference for that pair. (note: you will have to convert the kilometers to centimeters to get the rate per year; one kilometer equals 100,000 cm).
Island Sequence
(oldest to youngest) Separation Distance Age Difference Rate of Plate Movement per year
From Kauai to Oahu 181 km 1,900,000 years
Can you please explain on how to solve this