Answer:
30%
Explanation:
The computation of return on investment is shown below:-
Return on Sales = Credit sales Ă— Â Return on sales
= $24,000 Ă— 5%
= $1,200
Investment in Accounts Receivable
= $24,000 Ă— Â 1 Ă· 6
= $4,000
Return on Investment = Return on Sales ÷  Investment in Accounts Receivable  × 100
= $1,200 Ă· $4,000 Â Ă— 100
= 30%
Therefore for computing the return on investment we simply divide the investment in account receivable by return on sales.