Answer:
Paper = 0.45 and Pencil = 0.55
Explanation:
For computing the weighatge cost proportions, first we have to determine the sales value at split off point which is shown below:
For paper, it would be
= 180,000 × $0.20
= $36,000
For pencil, it would be
= 180,000 × $0.24
= $43,200
Now the total sales would be
= $36,000 + $43,200
= $79,200
Now the weightage would be
For paper = Paper sales ÷ Total sales
= $36,000 ÷ $79,200
= 0.45
For pencil = Paper sales ÷ Total sales
= $43,200 ÷ $79,200
= 0.55