Answer:
I think the D equals one (1) based on the info i was given
Step-by-step explanation:
Answer:
Step-by-step explanation:
- Speed in one direction = 40 km/h
- Speed on return = x
- Average speed = 60 km/h
Let the distance be d
<u>Average speed </u>
- 2d/(d/40 + d/x) = 60
- d/40 + d/x = 2d/60
- 1/40 + 1/x = 1/30
- 1/x = 1/30 - 1/40
- 1/x = (4-3)/120
- 1/x = 1/120
- x = 120 km/h
1
-
8 that is the same as 1 over 8
Comes down to exactly 10.95
Use a percentage finder ;), also it will show you the work on some sites
;)
