In his motorboat, bill ruhberg travels upstream at top speed to his favorite fishing spot, a distance of 24 mi, in 2 hr. returning, he finds that the trip downstream, still at top speed, takes only 1.5 hr. find the rate of bill's boat and the speed of the current. let x = the rate of the boat in still water and y = the rate of the current.

Rate of Bill's boat = 14 miles per hour

Speed of the current = 2 miles per hour

Step-by-step explanation:

Let x = the rate of the boat in still water and y = the rate of the current.

Distance traveled = 24 miles

Time taken for upstream motion = 2 hour

Time taken for downstream motion = 1.5 hour

Velocity of upstream motion = x - y

Velocity of downstream motion = x + y

We have

           Displacement = Time x Velocity

Upstream motion

            24 = 2(x-y)

             x - y = 12 eqn 1

Downstream motion

            24 = 1.5(x+y)

             x + y = 16 eqn 2

eqn 1 + eqn 2

             2 x = 28

                x = 14 miles per hour

Substituting in eqn 2

                 14 + y = 16

                      y = 2 miles per hour

Rate of Bill's boat = 14 miles per hour

Speed of the current = 2 miles per hour

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40

a

step-by-step explanation: