Unit 3: Check its math · Lesson 3 of 4 · about 6 min

Get trip totals right

You are comparing three options for a 4-night work trip. On the real run, the first totals came out $300 to $400 too high, so you want the math shown.

You're practising: Making your AI show its math, so wrong totals are easy to catch before you book.

The mistake to catch: AI totals look right and are often wrong. Make it show the math.

← Your learning path

1. Open the prompt

Open How to plan a trip with Grok Bot (approve before it books)and copy its prompt into your AI. Any AI works.

2. Give it this sample data

4 nights, same dates for every option.

Option A: flight $420 round trip, hotel $160 a night
Option B: flight $380 round trip, hotel $210 a night
Option C: flight $510 round trip, hotel $135 a night

Your task: Ask your AI for the total of each option with the math shown, the cheapest option, and a reminder that nothing is booked yet.

3. Paste your AI's answer

Checked in your browser with plain rules. Your answer isn't sent or stored anywhere.

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Passed. Here's one answer that also passes, to compare

Option A: $420 + 4 x $160 = $420 + $640 = $1,060
Option B: $380 + 4 x $210 = $380 + $840 = $1,220
Option C: $510 + 4 x $135 = $510 + $540 = $1,050

Cheapest: Option C at $1,050, just $10 under A. Nothing is booked; pick one and confirm the fares are still available.

Next: Forecast when your plan runs out

Ready to use it for real? Set up How to plan a trip with Grok Bot (approve before it books).

Challenge a coworker: can their AI pass it too?

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Your learning path · Build your AI staff

Get trip totals right

1. Open the prompt

2. Give it this sample data

3. Paste your AI's answer

Passed. Here's one answer that also passes, to compare

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