Case Math Practice
Thirty drills across the eight calculations cases actually use. Answer, check, and read the working. No account needed.
After a 40% discount, a product sells for $72. What was the list price?
Round to the nearest $0.01.
At 4% annual growth, roughly how many years does it take to double?
Use the rule of 72. Round to the nearest 0.1.
Fixed costs are $240,000, price is $50 and variable cost is $30 per unit. How many units to break even?
Round up to a whole unit.
CAC is $180, monthly revenue per customer is $75 at 80% gross margin. What is the payback in months?
Round to the nearest 0.1 month.
Channel A is 60% of traffic converting at 3%, channel B is 40% converting at 10%. What is the blended conversion rate?
Round to the nearest 0.1%.
A $250,000 programme saves $120,000 a year. What is the payback period?
Round to the nearest 0.1 year.
The market is $2.0B. What revenue does a 8% share represent?
Round to the nearest $0.1M.
What is 12.5% of 2,400?
Exact answer.
A company has $250M in revenue at a 18% profit margin. What is the profit?
Round to the nearest $0.1M.
Revenue grew from $100M to $500M over 4 years. What was the CAGR?
Round to the nearest 0.1%.
Fixed costs are $240,000, price is $40 and variable cost is $16 per unit. How many units to break even?
Round up to a whole unit.
CAC is $300, monthly revenue per customer is $60 at 60% gross margin. What is the payback in months?
Round to the nearest 0.1 month.
Channel A is 60% of traffic converting at 2%, channel B is 40% converting at 10%. What is the blended conversion rate?
Round to the nearest 0.1%.
A $400,000 programme saves $80,000 a year. What is the payback period?
Round to the nearest 0.1 year.
The market is $4.0B. What revenue does a 3% share represent?
Round to the nearest $0.1M.
What is 25% of 3,600?
Exact answer.
After a 40% discount, a product sells for $45. What was the list price?
Round to the nearest $0.01.
Revenue grew from $500M to $1.0B over 3 years. What was the CAGR?
Round to the nearest 0.1%.
Fixed costs are $240,000, price is $40 and variable cost is $20 per unit. How many units to break even?
Round up to a whole unit.
CAC is $180, monthly revenue per customer is $60 at 80% gross margin. What is the payback in months?
Round to the nearest 0.1 month.
Channel A is 75% of traffic converting at 2%, channel B is 25% converting at 8%. What is the blended conversion rate?
Round to the nearest 0.1%.
A $250,000 programme saves $150,000 a year. What is the payback period?
Round to the nearest 0.1 year.
The market is $12.0B. What revenue does a 5% share represent?
Round to the nearest $0.1M.
What is 25% of 2,400?
Exact answer.
A company has $250M in revenue at a 15% profit margin. What is the profit?
Round to the nearest $0.1M.
Revenue grew from $500M to $2.0B over 5 years. What was the CAGR?
Round to the nearest 0.1%.
Fixed costs are $240,000, price is $50 and variable cost is $20 per unit. How many units to break even?
Round up to a whole unit.
CAC is $300, monthly revenue per customer is $40 at 80% gross margin. What is the payback in months?
Round to the nearest 0.1 month.
Channel A is 60% of traffic converting at 3%, channel B is 40% converting at 10%. What is the blended conversion rate?
Round to the nearest 0.1%.
A $600,000 programme saves $80,000 a year. What is the payback period?
Round to the nearest 0.1 year.
Thirty drills build the reflex; a case decides whether it holds. Go to case interview practice and lesson one of the course.