The speed of the current in a river is 6 miles per hour
<em><u>Solution:</u></em>
Given that,
Speed of boat in still water = 20 miles per hour
Time taken = 3 hours
Distance downstream = 78 miles
To find: Speed of current
<em><u>If the speed of a boat in still water is u km/hr and the speed of the stream is v km/hr, then: </u></em>
Speed downstream = (u + v) km/hr
Speed upstream = (u - v) km/hr
<em><u>Therefore, speed downstream is given as:</u></em>

We know that,
Speed downstream = (u + v)
26 = 20 + v
v = 26 - 20
v = 6 miles per hour
Thus speed of the current in a river is 6 miles per hour
The answer is x over x + 3.
Answer:
A) LEngth of FG is 2 units
Step-by-step explanation:
Considering the diagram attached below.
Reflection of any polygon does not affects its length.
As it is given both polygons are reflection of each other so their sides are congruent.
AB ≅ EF = 3 units
BC ≅ FG = 2 units
CD ≅ GH = 2.2 units
DA ≅ HE = 3.2 units
Answer:
11 weeks
Step-by-step explanation:
34+10x=144 equation
10x=110
x=11
check answer
11*$10=$110 money after 11 weeks at $10/week
+. 34 money saved
=. 144 money needed.