Answer:
3D Printer 55 % Truck 8 %
Step-by-step explanation:
The formula to compute the average rate of return for each proposal is shown below:
The average rate of return = Average net income ÷ Average investment
Particulars 3D printer Truck
Average net income (a) $880 $1,600
($3,520 ÷ 4 years) ($14,400 ÷ 9 years)
Average investment (b) $16,000 $20,000
($32,000 ÷ 2) ($40,000 ÷ 2)
Average rate of return (a ÷ b) 55% 8%