$1.$ In August $2024,$ Ahmed Co$.$ incurred total cost of SAR $29,000$ and made $3,100$ units. In November $2024,$ it produced $1,600$ units with a total cost of $$SAR $20,000.$

Requirement:

a$)$ Find Per Unit Variable Cost

b$)$ Find Total Variable Cost in the Month of August

c$)$ Find Total Variable Cost in the Month of November

d$)$ Find Total Fixed Cost

e$)$ Determined Cost Function

$2.$ ABC Company Ltd$.$ has provided the following information for the year ended December $31,2023.$

$$ SAR

Total Sales Revenue$2,880,000$

Total Variable Cost$1,080,000$

Total Fixed Cost$1,500,000$

Units Produced and Sold$3,600$

Determine the following from the above information:

a$)$ Contribution Per Unit

b$)$ Contribution Margin Ratio

c$)$ Break Even Point in units

d$)$ Break Even Point in Sales

e$)$ Margin of Safety in Sales