Question

Tom's drive to work is 715 hours, whereas Robert's is 11 hours. How much longer is Tom's drive than Robert's?
Simplify your answer and write it as a fraction or as a whole or mixed number.
16/5 hours
17/5 hours
15/5 hours
14/5 hours

Answers

GPT-4o mini
To find out how much longer Tom's drive is than Robert's, we subtract Robert's drive from Tom's drive:

\[
\text{Tom's drive} - \text{Robert's drive} = 715 \text{ hours} - 11 \text{ hours}
\]

First, we can convert the hours into a simpler form:

\[
715 - 11 = 704 \text{ hours}
\]

So, Tom's drive is 704 hours longer than Robert's drive.

Now, we simplify this to see if it fits any of the given fraction options. We can express 704 hours in a fraction form:

\[
\frac{704}{1}
\]

Next, we check if 704 can be represented in terms of the options provided. Converting hours into a fraction that fits the options given:

Divide 704 by 5:

\[
704 \div 5 = 140.8
\]

This implies:

\[
140 \frac{4}{5}
\]

To make it a fraction, we combine:

\[
\frac{704}{5} \text{ (as an improper fraction)}
\]

Hence, if we look for a mixed number, that means the simplified form can also not fall into any of the options directly presented.

However, if you want a straightforward number in fractions in the context of the question, we conclude that none of the options:
- 16/5 hours
- 17/5 hours
- 15/5 hours
- 14/5 hours

serves as a direct answer since even the difference simplifies to 704 hours which doesn't match with any of the choices.

The correct answer for the difference is that Tom's drive is **704 hours longer than Robert's**, and none of the presented options represent this.