Edelman Engineering is considering including two pieces of equipment, a truck and an overhead pulley system, in this years capital budget. The projects are independent. The cash outlay for the truck is $7,500 and that for the pulley system is $10,000. The firms cost of capital is 6.70%. After-tax cash flows, including depreciation, are as follows:

Year	1	2	3	4
Truck	$2,500	$2,500	$2,500	$2,500
Pulley	$3,000	$3,000	$3,000	$3,000

a. What is the MIRR for the Truck?

b. What is the MIRR for the Pulley?