Question

Find the elapsed time between 6:39 a.m. and 9:20 a.m. 2 hours, 19 minutes 2 hours, 41 minutes 3 hours, 19 minutes 3 hours, 41 minutes.

A) 2 hours, 19 minutes
B) 2 hours, 41 minutes
C) 3 hours, 19 minutes
D) 3 hours, 41 minutes

need answers quick! :)
12 pts.

Answer 1

2 Hours and 41 Minutes (Option B)

Explanation:

6:39 am to 9:20 am is 2 hours and 41 min appart.

(It's a little hard to explain how to do it though.)

Answer 2

B) 2 hours, 41 minutes

Explanation:

We need to find the elapsed time between 6:39 a.m. and 9:20 a.m.

Let us do this in steps:

1) Elapsed time between 6:39 a.m and 7 a.m. = 21 minutes

2) Elapsed time between 7 a.m. and 8 a.m. = 1 hour = 60 minutes

3) Elapsed time between 8 a.m. and 9 a.m. = 1 hour = 60 minutes

4) Elapsed time between 9 a.m. and 9:20 a.m. = 20 minutes

Summing all the intervals , we find that the total elapsed time between 6:39 a.m. and 9:20 a.m. is (21 + 60 + 60 + 20) minutes

= 161 minutes

Expressing it in hours and minutes , this is equal to 2 hours and 41 minutes.