fernell and dabney shared the driving
florida for spring break. fernell averaged 50 mph, and
dabney averaged 64 mph. if fernell drove for 3 hours
longer than dabney but covered 18 miles less than dabney, then for how many hours did fernell drive?

15 hours

Step-by-step explanation:

Given:

Fernell's speed mph

Dabney's speed mph

Denote:

- distance covered by Fernell

- distance covered by Dabney

- Fernell's time

- Dabney's time

1. If Fernell drove for 3 hours longer than Dabney, then his time is 3 hours more than Dabney's time and

2. If Fernell covered 18 miles less than Dabney, then

Use formula

Subtract from the first equation the second equation and equate it to 18:

to find the total number of combinations, multiply the quantity of each item by each other:

2 pairs of shoes x 3 pairs of shorts = 6 different combinations.