Three friends, Amy, Bob and Sam share $ 1815. Amy’s share is four times as much as Bob’s and Bob’s share is two times as much as of Sam. How much is each of their shares?

Technicians have installed a center pivot, circular irrigator for a farm that covers 25 acres. a.) how long is the irrigation boom (in feet) from the center pivot to its farthest extent? b.) if the irrigation boom makes 4 full revolutions in a day, how many miles does the end of the boom travel in 5 days?