40×8=320[ 8×3=24 ]320+24=344
Answer:
Step-by-step explanation:
Distance upstream = (34-c)(39/60) miles
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Distance downstream = (34+c)(29/60) miles
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Equation:
distance = rate*time
distance up = distance down
(34-c)(39/60) = (34+c)(29/60)
Multiply both sides by 60 to get:
39(34-c) = 29(34+c)
39*34 - 39c = 29*34 + 29c
68c = 340
c = 5 mph speed of the current
Answer:
the exact middle point:
Step-by-step explanation:
"the midpoint of the line segment"
Answer:
The distance cover by him walking back is 11.25 miles
Step-by-step explanation:
Given as :
Time for Janelle to spend on training = 5 hours
The running speed of Janelle = 9 mph
The walking back with 3 mph
Let The distance for running and walking is same i.e D miles
SO, Time = 
∴ 5 =
+ 
Or, 5 × 9 = D + 3 D
Or, 45 = 4 D
∴ D =
= 11.25 miles
Hence The distance cover by him walking back is 11.25 miles Answer