Question

A boat takes 3 hours to go 6 miles upstream. It can go 18 miles downstream in the same time. Find the rate of the current and the rate of the boat in still water.? (Hint: Because the current pushes the boat when it is going? downstream, the rate of the boat downstream is the sum of the rate of the boat and the rate of the current. The current slows down the boat when it is going? upstream, so the rate of the boat upstream is the difference of the rate of the boat and the rate of the? current.)

Answer #1

A boat takes 4 hours to go 8 miles upstream. It can go 32 miles
downstream in the same time. Find the rate of the current and the
rate of the boat in still water. (Hint: Because the current pushes
the boat when it is going downstream, the rate of the boat
downstream is the sum of the rate of the boat and the rate of the
current. The current slows down the boat when it is going
upstream, so...

A motorboat takes 5 hours to travel 150km going upstream. the
return trip takes 3 hours going downstream. What is the rate of the
boat in still water? and what is the rate of the current?

A barge moves 12 miles downstream and 8 miles upstream in a
total time of 2 hours. The current in the river is 2mph. How fast
does the barge move in still water?

The
current of a river is 3 miles per hour. A boat travels to a point
16 miles upstream and back in 4 hours. What is the speed of the
boat in still water ? The speed of the boat in still water is
?

A
boat traveled downstream a distance of 24 miles and then came right
back. If the speed of the current was 6 mph and the total trip took
3 hours, find the average speed of the boat relative to the
water.

5) Two high-speed ferries leave at the same time from a city to
go to the same island. The first ferry, the Cat, travels at
36 miles per hour. The second ferry, the Bird, travels at 23
miles per hour. In how many hours will the two ferries be 26 miles
apart?
The ferries will be 26 miles apart after ...hour(s).
6) Jane took 30 min to drive her boat upstream to water-ski at
her favorite spot. Coming back later...

1) Ina Crespo rowed 10.5 miles down the Habashabee River in 1.5
?hours, but the return trip took her 3.5 hours. Find the rate Ina
rows in still water and the rate of the current. Let x represent
the rate Ina can row in still water and let y represent the rate of
the current.
d equals= r times • t
Downstream x plus+y
Upstream. x minus?y
Ina can row nothing mph in still water.
2) Gabe? Amodeo, a nuclear?...

Alexandria has her own lawn service. It takes her two hours to
cut a lawn and she cuts 1,000 lawns per year. She uses
solar-powered equipment (truck and mower) that will last forever –
and can be sold at any time for $30,000. Alexandria could earn $12
per hour as a swim instructor. The interest rate is 10 percent.
Given her current level of output, compute her marginal cost
and average cost of cutting lawns.
Suppose she decrease the number...

The next three questions go together. 21. Expired air is
saturated with water vapor and generally contains more of it than
does inspired air. There is usually a net loss of water from the
body due to breathing. Water vapor pressure in the at saturation in
the lungs (at 37°C) is 47 mmHg, while in expired air at 33°C it is
37.7 mmHg. Consider the case of someone who is breathing dry air in
and moist air out at a...

CASE 3–18 Ethics and the Manager [Course Objective
B] Terri Ronsin had recently been transferred to the Home
Security Systems Division of National Home Products. Shortly after
taking over her new position as divisional controller, she was
asked to develop the division’s predetermined overhead rate for the
upcoming year. The accuracy of the rate is important because it is
used throughout the year and any overapplied or underapplied over-
head is closed out to Cost of Goods Sold at the...

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