{"id":"acct-per-diem-trip-math","audience":"small-business","category":"finance-work","track":"finance","technique":"verification","level":"beginner","title":"Calculate a per diem reimbursement from the policy","free":false,"task":"You're processing a travel claim. Write a prompt for plain text with exactly five lines starting \"Full days:\", \"Travel days:\", \"Meals provided:\", \"Per diem due:\" and \"Note:\". The first four show the math; the Note line is one sentence about the receipts. Use the policy rates only. Under 70 words. No bullets.","materialLabel":"Travel policy and claim (attached to your prompt automatically)","material":"MEAL PER DIEM POLICY (small-business travel policy, rev. 2026)\n- Flat $60 per full travel day. No receipts needed for per diem.\n- The first and last day of a trip are travel days, paid at 75% of the full rate.\n- Deduct $15 for each meal provided free by a host or conference.\n\nCLAIM: Tomas Reyes, Sales Summit, Nov 2 to Nov 5, 2026 (4 days; Nov 2 and Nov 5 are travel days)\nMeals provided by the conference: lunch on Nov 3 and lunch on Nov 4. (Breakfast was at the hotel and paid by Tomas.)\nMeal receipts submitted by Tomas: $255.00 total\n\nTomas wrote: \"I'd like to be reimbursed for what I actually spent, $255.\"\nThe claim form shows he also bought a $40 dinner on Nov 5 for a client; that is an entertainment claim handled separately.","rules":[{"type":"plainText"},{"type":"maxWords","max":70},{"type":"maxBullets","max":0}],"promptHints":[{"label":"Names the five lines","patterns":["full days","travel days","meals provided","per diem due"]},{"label":"Gives the 75% rate","patterns":["75%","\\$45"]},{"label":"Deducts provided meals","patterns":["\\$15","provided"]},{"label":"Handles receipts","patterns":["receipt","flat"]},{"label":"Caps length","patterns":["\\d+\\s*words","plain"]}],"mistakes":[{"title":"Paying the receipts","why":"The AI reimburses the $255 Tomas spent.","fix":"Add: \"Per diem is a flat rate; receipts don't change it. Say so in the Note line.\"","checks":["r2"]},{"title":"Treating all days as full","why":"The AI uses 4 x $60.","fix":"Say: \"The first and last days are travel days at 75%.\"","checks":["r0"]},{"title":"Missing the meal deduction","why":"The AI forgets the two conference lunches.","fix":"Add: \"Deduct $15 for each meal provided.\"","checks":["r1"]},{"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"]},{"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 flat-rate policy has three adjustments. Name them and ask for the five lines.","rubricLabels":["Has exactly five lines starting Full days:, Travel days:, Meals provided:, Per diem due: and Note:, and Full days shows 2 x $60 = $120 and Travel days shows 2 x $45 = $90 ($60 x 75%)","The line starting \"Meals provided:\" shows 2 x $15 = -$30 and the line starting \"Per diem due:\" shows $120 + $90 - $30 = $180","The line starting \"Note:\" says per diem is a flat rate under the policy so the $255 of receipts doesn't change the amount"]}