Answer:The variable cost per book is $16
Explanation:
Sale price per book = $18
Books need to sell = 2,000
Total Revenue. = $36,000
($18*2,000)
At Break Even Total Revenue = Cost + investment so total variable cost is ($36,000 - $4,000) = $32,000 and cost per book is $32,000÷2,000 = $16 per book