Answer:
10 9/28
Explanation:
To find the total number of hours Kelly flew, we need to add the time it took her to fly from city A to city B and the time it took her to fly from city B to city C.
Given:
- It took 7 3/4 hours to fly from city A to city B.
- It took another 2 4/7 hours to fly from city B to city C.
First, let's convert the mixed numbers to improper fractions:
- 7 3/4 hours = 31/4 hours
- 2 4/7 hours = 18/7 hours
Next, we can add the fractions together:
31/4 hours + 18/7 hours = (31*7 + 4*18) / (4*7) = (217 + 72) / 28 = 289/28 hours
Now, let's simplify the fraction:
289/28 hours = 10 9/28 hours
Therefore, Kelly flew a total of 10 9/28 hours from city A to city C.