Performance marketing math questions.
68 performance marketing mathquestions from the bank — open to read. Pick one and practice it out loud; a coach note comes back in seconds.
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Your blended CAC just jumped from $40 to $65. LTV is $180. Walk me through what you investigate first.Your last-touch attribution says paid search is the hero. Walk me through why you might not believe it.Walk me through the difference between blended CAC and paid CAC, and when each matters more for decision-making.Walk me through your LTV calculation for a consumer subscription with 5% monthly churn and $15 ARPU.Walk me through how you'd diagnose whether you should scale up or pull back from a paid channel that's at 100% ROAS.If you doubled paid spend tomorrow on the same campaigns, would CAC stay the same? Walk me through.Walk me through how you'd run an incrementality test for an always-on paid channel.Your blended CAC is improving but your paid CAC is getting worse. What's likely going on?Your team is using a 24-month LTV. Your CFO says use 12. Walk me through how to bridge the conversation.Walk me through how you'd compare channels with very different sales-cycle lengths on a single CAC dashboard.Your CAC payback period is 14 months. What does that tell you about how aggressively you can spend?Walk me through when you'd choose data-driven attribution over a position-based model.Your CEO uses paid CAC as the single growth metric. Walk me through how you'd improve that conversation.Walk me through how you'd handle the case where a small set of high-LTV users is skewing your average.Walk me through how you'd treat a channel that has great direct ROAS but poor downstream retention.Your team is spending against an LTV that's increasingly looking optimistic. Walk me through your conversation with the CFO.Your data team is moving to MMM for the first time. Walk me through what you'd want them to validate before relying on it.Walk me through how you'd report on CAC when your organic growth depends partly on paid spend driving awareness.Walk me through what makes you trust an LTV number more or less when you see it.Two channels both deliver $20 CAC. Walk me through what would still make you pick one over the other.Walk me through whether you'd rather have your CAC drop 10% or your LTV grow 10%.Walk me through how you'd reconcile MTA, MMM, and incrementality tests if all three disagree.Walk me through how you'd think about CAC for a freemium product where most customers never pay.Walk me through how you'd model LTV for a product where margins are increasing over time.Walk me through how you'd allocate budget between brand and performance channels in a no-growth quarter.Walk me through how you'd compute the marginal cost per acquisition versus the average cost.Walk me through how you'd attribute organic word-of-mouth in a CAC dashboard.Walk me through what you do when paid CAC and blended CAC trend in opposite directions for three months in a row.Walk me through how you'd handle LTV math when subscription pricing has changed multiple times.Walk me through whether you'd cap spend on your highest-performing channel and why.Walk me through how you'd calculate ROAS for a Facebook campaign that spent $5,000 and generated $12,000 in revenue.Your paid social channel has a $50 CAC and customers have an average order value of $80 with 40% gross margin. Walk me through whether this channel is profitable.Walk me through what first-touch attribution means and when you'd use it versus last-touch.You have 1,000 paid acquisitions at $30 each and 500 organic acquisitions in the same month. Walk me through how to calculate blended CAC.Walk me through how you'd estimate LTV for an e-commerce customer who makes an average of 3 purchases per year at $50 each, staying for 2 years on average.Your Google Ads campaign has a 3:1 ROAS. Walk me through what that means and whether it's good.Walk me through why you can't just add up all your channel-specific CACs to get a company-wide CAC.You're calculating LTV but only have 6 months of customer data. Walk me through what assumptions you'd need to make.Walk me through how linear attribution works and what type of customer journey it works best for.Your paid search CAC is $40 but your blended CAC is $25. Walk me through what this tells you about your acquisition mix.Walk me through how you'd calculate the contribution margin per customer if your product sells for $100, has $35 COGS, and $50 CAC.Your TikTok ads delivered 200 conversions at $2,000 spend while your email campaign delivered 150 conversions at $300 spend. Walk me through which has better CAC and CPA.Your retention cohorts show 80% month-1, 65% month-2, 55% month-3, then flat at 50%. Walk me through how you'd calculate LTV and what assumptions you're making.You're running Meta and Google. Meta reports 3x ROAS, Google reports 4x. Walk me through how you'd decide which one to scale next week.Your affiliate channel shows a $25 CAC but it's all last-touch attributed. Walk me through how you'd value this channel's true contribution.Walk me through how you'd build a cohorted LTV model for a freemium product where 3% of users convert to paid after 60 days on average.Your paid CAC is $80, blended is $50, and organic is growing 15% month-over-month. Walk me through your spending strategy for next quarter.Walk me through how you'd calculate contribution margin per customer when gross margin is 60% and monthly variable costs per user are $4.You're testing first-touch vs. linear attribution. First-touch gives paid social a $45 CAC, linear gives $72. Walk me through what this tells you about the customer journey.Your SaaS product has 3% monthly churn and $50 ARPU. Your CFO asks if we can afford a $600 CAC. Walk me through your answer.Walk me through how you'd allocate a $500K monthly budget across three channels with CACs of $30, $55, and $90 if LTV is $200.Your paid search CAC is $40 but when you pause it for a week, organic drops 20%. Walk me through how this changes your view of the channel.Walk me through the difference between CAC payback period and break-even time, and when each metric matters more.Your blended CAC is $35 but when you model paid-only growth, CAC would be $90. Walk me through how you present this trade-off to leadership.You have a 90-day sales cycle. Walk me through how you'd measure CAC for conversions happening this month from spend three months ago.Your mobile app LTV is $45 but 40% of users never make it past onboarding. Walk me through how you'd adjust your CAC target.Walk me through how you'd set up a holdout test to measure the incrementality of your display advertising spend.Your data shows customers acquired via referral have 2x the LTV of paid customers. Walk me through how this changes your CAC targets by channel.Walk me through how you'd calculate LTV for a two-sided marketplace where you acquire both buyers and sellers.Your attribution window is 7 days but your average purchase decision takes 21 days. Walk me through the implications for your CAC measurement.Walk me through how you'd compare the efficiency of a $20 CAC channel with 10% churn vs. a $35 CAC channel with 5% churn.Your iOS CAC is $65, Android is $40, but iOS LTV is only 1.2x Android LTV. Walk me through your channel allocation strategy.Walk me through how you'd measure blended CAC when 30% of customers come through an unpaid partnership that required a $200K annual fee.Your retargeting campaign shows a $15 CAC. Walk me through how you'd test whether it's stealing conversions from other channels.Walk me through how discount rate assumptions in your LTV model affect how much you're willing to pay for a customer today.Your brand campaign doesn't get last-touch credit but when you pause it, all channel CACs rise 25%. Walk me through how you'd value it.Walk me through how you'd build a CAC model that accounts for seasonal conversion rate swings of 40% between Q4 and Q1.Walk me through how you'd measure incrementality for a multi-channel campaign when your attribution model is broken.