Khan Academy has more than 100,000 practice problems.😯 Last year, this problem was the most challenging. Millions of learners got the answer wrong.🤔 Can you get it right? Or do you need help from an AI math tutor?

*Henry can write 5 pages of his novel in 3 hours.*

At this rate, how many pages can Henry write in 8 hours?

### How would AI solve this problem?

Type this question into an AI-powered tool like ChatGPT or Bard and it will give you the answer.

If you use Khan Academy’s AI-powered tutor, Khanmigo, it helps you uncover the answer yourself, step-by-step. For example, Khanmigo will ask you, “What’s the first piece of information you think is important from the problem?”

Now that you’ve had a little help from Khanmigo, do you think you have the right answer?

### Scroll down to see the answer.

### The answer is…

Answer: Henry can write 13 ⅓ pages in 8 hours.

### Need help? Get Step-by-step math AI tutoring

How did it go? You can get step-by-step support from Khanmigo on all 70,000 practice problems on Khan Academy.

### Try our AI-powered math homework help

Want to boost your math confidence? We had our AI-powered tutor, Khanmigo, create day-by–day math study plans, from third grade through AP stats! ⚡️

Want to work on similar practice problems? Check out more rate problems in our 6th grade math course.

Just a little time studying math each day can be the boost you need.

Keep going!