The flight time from Houston to London is 9 hours 40 minutes. If I arrive at 4:30, what time did I set off?

6:50 a. m. or 6:50 p. m.

Step-by-step explanation:

We are given;

Time taken from Houston to London as 9 hours 40 minutes Arrival time is 4: 30 pm or am (not indicated:

We are required to determine the set off time

To answer the question, we are going to subtract the time taken from the arrival time; Option 1: when arrival time is 4:30 pm

12 hours + 4:30 = 16: 30

Thus, set off time = 16:30 - 9 hrs 40 minutes

= 6:50 a. m.

Option 2: When arrival time is 4 : 30 a. m

Set off time = 0430 hrs - 9 hours 40 minutes

= 6:50 p. m

Therefore, the set of time is 6:50 a. m. or 6:50 p. m.