Need Help on (B) part explain please. Thank you

) Your answer is correct. Calculate the activity rate for each cost pool. Cost Pool Activity Rate Order processing $ $ 150 per order Telephone technical support $ 20 per hour Product demonstrations $ 490 per demonstration Express deliveries $ 150 per delivery e Textbook and Media Calculate the customer net profit and customer profit margin for the average individual customer and the average corporate customer. (Round customer profit margin to 1 decimal place, es. 15.2%) Customer net profit Customer profit margin % Individual Customer $ Corporate Customer $ $