1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alenkinab [10]
2 years ago
5

Excursion boat on the river takes 2 1/2 hours to make the trip to a point 12 miles upstream and to return if the rate at which t

he boat travels in Still water is five times the rate of the river current what is the rate of the current
Mathematics
1 answer:
Mama L [17]2 years ago
3 0

Answer:

Let the current speed be "c";

Then the boat speed in still wate is "5c":

-----------------------

Upstream speed:

distance = 12 miles ; rate = 5c-c = 4c mph ; time = 12/4c = 3/c hrs

---------------------------

Downstream speed:

distance = 12 miles ; rate = 5c+c = 6c mph ; time = 12/6c = 2/c hrs

Step-by-step explanation:

Equation:

time + time = 2 1/2 hrs

3/c + 2/c = 5/2

Multiply thru by 2c to get:

6 + 4 = 5c

c = 2 mph (speed of the current)

5c = 10 mph (speed of the boat in still water)

You might be interested in
If Mark 12 times older than his brother and his brother is 7 times younger how old his brother​
krok68 [10]

Answer:

word

Step-by-step explanation:

3 0
3 years ago
Vanessa's scale drawing of a volleyball court, shown below, is 3 inches long and 1 1/2 inches wide. How many square meters make
natima [27]
I took a test on this yesterday and all i know is the answer is either 81 117 or 162
6 0
3 years ago
Out of a group of 250 pupils, 10 pupils could not join the school's excursion due to illness.
Arada [10]

Answer:

out of 250 wala nagka crush sayo hshshs

charot lng

8 0
3 years ago
2x² + 166 +30
Darya [45]

Answer:

c....................

5 0
3 years ago
Find the value of X in the simplest radical form
Galina-37 [17]

Answer:. 7


Step-by-step explanation:


4 0
3 years ago
Other questions:
  • So far this semester, Zachary has test scores of 92, 98, 65, 77, 91, and 85. He has one more test to take before the semester en
    13·2 answers
  • I am confused on numbers 25 and 29, the instructions are at the top.
    13·1 answer
  • Susan has $800 in a savings account that earns 6% annually. If the interest is not compounded, how much interest will she earn i
    11·1 answer
  • Calculate the diameter of Circle J if the circumference is 100.48<br> centimeters
    5·1 answer
  • How do you unFOIL a trionomial
    11·1 answer
  • CAN YOU GUYS PLEASE HELP ME? THANK YOU!
    15·1 answer
  • The graphs below have the same shape. What is the equation of the red<br> graph?
    10·2 answers
  • You want to wrap the box with a square piece of wrapping paper with a side length of 24 inches. Do you have enough paper to wrap
    8·1 answer
  • PLEASE HELP ME THANKS IF u do
    12·1 answer
  • 17. Kayla has a 20-quart jug of lemonade that she is pouring into cups for her daughters soccer team practice. If each cup holds
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!