{"id":"dat-sb-food-truck-item-profit","audience":"small-business","category":"decisions","technique":"grounding","title":"Find which food truck item earns the least per week","free":false,"task":"You run a taco truck and want to review the price of whichever item earns the least weekly profit. Write exactly 4 numbered lines, one per item, each showing (price − cost) x units = weekly profit, then one unnumbered last line naming the item to review. Use your supplier's new cost, plain text, under 70 words, nothing else.","materialLabel":"Your sales log and supplier note (attached to your prompt automatically)","material":"LA PALMA TRUCK - avg week (last 4 weeks)\n\nItem | Price | Ingredient cost | Units sold/week\nBrisket taco | $5 | $2.50 | 200\nElote cup | $4 | $1 | 110\nFish taco | $5 | $2 | 120\nVeggie bowl | $8 | $3 | 70\n\nSupplier note (Hill Country Meats, Nov 1):\n\"Brisket goes from $2.50 to $3.50 per taco portion starting this month. Sorry, cattle prices.\"\n\nOther:\n- Fish taco sales dip when it rains.\n- Thinking about adding horchata, maybe $3.\n- Commissary rent went up $50/month, but that's not per item.\n- Mom says the veggie bowl is \"too fancy for a truck\" lol.\n- Shared with the team in the usual folder.\n- Questions go to me directly.","rules":[{"type":"numberedItems","count":4},{"type":"plainText"},{"type":"maxWords","max":70}],"mistakes":[{"title":"Using the old cost","why":"The AI reads the table, so brisket looks like the best earner.","fix":"Add: \"Use the supplier's new $3.50 brisket cost.\"","checks":["r0","r2"]},{"title":"Not asking to see the work","why":"Without the math you can't check which number is off.","fix":"Add a line to copy: \"1. Brisket taco: ($5 − $3.50) x 200 = $300\"","checks":["r1","numberedItems"]},{"title":"Getting a business plan","why":"The AI adds horchata ideas and rent advice you didn't ask for.","fix":"Add: \"Then one line naming the item to review. Nothing else.\"","checks":["r2"]},{"title":"Trusting the AI to count words","why":"AI is bad at counting. Ask for a total word limit and it often lands over it.","fix":"Cap each line: \"each line under 12 words.\"","checks":["maxWords"]},{"title":"Forgetting where it goes","why":"AI loves markdown tables and bold, which show up as clutter in your phone notes.","fix":"Add: \"Plain text, no bold, headings or tables.\"","checks":["plainText"]}],"promptHints":[{"label":"Uses the new cost","patterns":["3\\.50","supplier","new cost"]},{"label":"Asks to show the math","patterns":["show (the |your )?(math|work)","x \\$|\\bx\\b.{0,10}=","calculation","step"]},{"label":"Defines profit","patterns":["profit","price.{0,10}cost","margin"]},{"label":"Sets a word limit","patterns":["\\d+\\s*words","word (limit|count)","under \\d+"]},{"label":"Asks for plain text","patterns":["plain","no bold","no markdown","no formatting","no (headings|tables)"]}],"hint":"The table has an old cost in it. Tell the AI about the new one, and ask it to show the profit math for every item.","rubricLabels":["Uses the new $3.50 brisket cost, giving Brisket taco $1.50 x 200 = $300 a week (not $500)","The other weekly profits are correct and shown as (price − cost) x units: Elote cup $330, Fish taco $360, Veggie bowl $350","The last line names Brisket taco as the item to review, after the four math lines, with no intro or extra advice"]}