188k views
3 votes
One cat went 10 miles further when traveling at 50 mph than a second car that traveled 2 hours longer at a speed of 40 mph. how long di the first cat travel?

User Paul Rubel
by
7.3k points

1 Answer

1 vote

So, the first car traveled for 9 hours.

I assume there might be a typo in your question, as you mentioned "cat" instead of "car." Assuming you meant "car," let's solve the problem:

Let
\( D_1 \) be the distance traveled by the first car (at 50 mph),
\( D_2 \) be the distance traveled by the second car (at 40 mph), and
\( t_2 \) be the time taken by the second car.

The first car went 10 miles further than the second car, so we can write an equation relating the distances:


\[ D_1 = D_2 + 10 \]

We also know that the second car traveled for 2 hours longer than the first car:


\[ t_2 = t_1 + 2 \]

Now, we can use the formula
\( \text{distance} = \text{speed} * \text{time} \) to express the distances in terms of speeds and times:


\[ D_1 = 50t_1 \]


\[ D_2 = 40t_2 \]

Substitute these expressions into the first equation:


\[ 50t_1 = 40t_2 + 10 \]

Now, use the relationship between
\( t_1 \) and \( t_2 \) from the second equation:


\[ 50t_1 = 40(t_1 + 2) + 10 \]

Solve for
\( t_1 \):


\[ 50t_1 = 40t_1 + 80 + 10 \]


\[ 10t_1 = 90 \]


\[ t_1 = 9 \]

User Thomas Goyne
by
7.2k points