{"id":"fpa-supplier-increase-pass-through-lines","audience":"fpa","category":"finance-work","track":"finance","technique":"verification","level":"intermediate","title":"Estimate the margin hit after passing part of a supplier increase","free":false,"task":"You're sizing the margin effect of a supplier price increase. Write a prompt for plain text with lines starting \"Cost increase:\", \"Pass-through:\", \"Net margin hit:\" and \"Per-month net hit:\", each with the math. Pass-through is the share recovered by raising customer prices, as set in the pricing plan. Don't mention the sales team's belief that customers will accept more. Under 70 words. No bullets or numbering.","materialLabel":"Supplier increase and pricing plan (attached to your prompt automatically)","material":"SUPPLIER INCREASE IMPACT - FY27, Delmar Systems\n\nAnnual spend with the supplier: $500,000\nAnnounced increase: 6% from Jan 1, 2027.\nPricing plan (approved by the CFO): raise customer prices to recover 50% of the cost increase.\n\nMethod: cost increase = annual spend x 6%. Pass-through = cost increase x 50%. Net margin hit = cost increase minus pass-through. Per-month net hit = net margin hit / 12.\n\nNotes: sales thinks customers will accept a bigger price increase and recover 100%. The approved plan is 50%. Volume effects of the price increase are not part of this estimate.","rules":[{"type":"plainText"},{"type":"maxWords","max":70},{"type":"maxBullets","max":0}],"promptHints":[{"label":"Names the four lines","patterns":["cost increase","pass-through","net margin hit","per-month net hit"]},{"label":"Uses the 50% plan","patterns":["50%"]},{"label":"Gives the monthly division","patterns":["/ 12"]},{"label":"Bans the sales view","patterns":["(do not|don'?t).*(sales|100%)"]},{"label":"Caps length","patterns":["\\d+\\s*words","plain"]}],"mistakes":[{"title":"Recovering 100%","why":"The AI follows sales and shows no margin hit.","fix":"Add: \"Use the approved 50% pass-through; do not mention sales' belief.\"","checks":["r2"]},{"title":"Wrong base for the increase","why":"The AI applies 6% to revenue.","fix":"Say: \"Cost increase = annual supplier spend x 6%.\"","checks":["r0"]},{"title":"No monthly line","why":"The AI stops at the annual hit.","fix":"Add: \"Per-month net hit = net margin hit / 12.\"","checks":["r2"]},{"title":"Markdown extras","why":"The AI adds bold labels, headings and a closing note.","fix":"Say: \"Plain text, no bold. Output only the lines asked for.\"","checks":["plainText","maxBullets","r1"]},{"title":"Trusting the AI to count words","why":"AI is bad at counting and runs past word limits.","fix":"Ask for fewer words than the real cap and keep each line short.","checks":["maxWords"]}],"hint":"A pass-through recovers only the approved share. State the share, the formula and the ban.","rubricLabels":["The line starting \"Cost increase:\" shows $500,000 x 6% = $30,000 and the line starting \"Pass-through:\" shows $30,000 x 50% = $15,000","The line starting \"Net margin hit:\" shows $30,000 - $15,000 = $15,000","The line starting \"Per-month net hit:\" shows $15,000 / 12 = $1,250, and the output never mentions the sales team's view or a 100% recovery"]}