Yoon Ki drove from Phoenix to tucson in 1 1/2 hours. then she drove from tucson to el paso in 4 3/4 hours. the second part of her trip was how many times as long as the first part.

3 1/4

3 1/4

To find out how many times longer the second part of Yoon Ki's trip is compared to the first part, we need to determine the duration of each part separately.

First, let's convert the mixed numbers to improper fractions for easier calculations:

1 1/2 hours = 3/2 hours
4 3/4 hours = 19/4 hours

Now, we can calculate the duration of Yoon Ki's trip from Phoenix to Tucson, which is 3/2 hours.

For the second part of the trip from Tucson to El Paso, the duration is 19/4 hours.

To find out how many times longer the second part is than the first part, we divide the duration of the second part by the duration of the first part:

(19/4) ÷ (3/2) = (19/4) × (2/3)
= (19 × 2) / (4 × 3)
= 38 / 12

Next, we simplify the fraction:

38 / 12 = (19 × 2) / (4 × 3)
= 38 / 12
= 19 / 6

Therefore, the second part of Yoon Ki's trip is 19/6 times as long as the first part.

assuming she went the same speed ...

second trip/first trip = 4.75 rate/1.5 rate
= 475/150
= 19/6 or appr 3.167 times as far