answer.
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
vfiekz [6]
2 years ago
10

Joey and Rita can individually paint a room in 8 hours. It takes Billy 12 hours to paint this same room. If all three work toget

her, how long would it take them to paint this room?
Mathematics
1 answer:
Alex Ar [27]2 years ago
8 0
We know that
<span>Joey and Rita paint a room in 8 hours
so
100%----------> 8 hours
 X%----------> 1 hour
x=100/8-----> 12.5%  
that means 
</span>Joey and Rita paint 12.5% of a room in 1 hour

Billy paint a room in 12 hours
so
100%----------> 12 hours
X %------------> 1 hour
x=100/12----> x=8.33 %
that means 
Billy paint 8.33% of a room in 1 hour

i<span>f all three work together
then
All three paint (12.5%+8.33%) in 1 hour

20.83%------------> 1 hour
100%------------> x
x=100/20.83-----> x=4.8 hours

the answer is
4.8 hours</span>
You might be interested in
What line intersects two other complaner lines in different points
kotykmax [81]

Answer & Explanation:

A transversal is a line that intersects two or more coplanar lines at different points. Two angles are corresponding angles if they occupy corresponding angles. Two angles are alternate exterior angles if they lie outside the two lines on opposite sides of the transversal.

4 0
2 years ago
Read 2 more answers
The quotient of 24 and x equals 14 minus 2 times x.
antoniya [11.8K]

Answer:

X = 4, 3

Step-by-step explanation:

I don't know if that's what you were looking for

7 0
2 years ago
Arthur took out a 20 year loan for $60,000 at an APR of 4.4% compounded monthly. Approximately how munch would save if he paid i
Eduardwww [97]
Monthly payments, P = {R/12*A}/{1- (1+R/12)^-12n}

Where R = APR = 4.4% = 0.044, A = Amount borrowed = $60,000, n = Time the loan will be repaid

For 20 years, n = 20 years
P1 = {0.044/12*60000}/{1- (1+0.044/12)^-12*20} = $376.36

Total amount to be paid in 20 years, A1 = 376.36*20*12 = $90,326.30

For 3 years early, n = 17 year
P2 = {0.044/12*60,000}/{1-(1+0.044/12)^-12*17} = $418.22

Total amount to be paid in 17 years, A2 = 418.22*17*12 = $85,316.98

The saving when the loan is paid off 3 year early = A1-A2 = 90,326.30 - 85,316.98 = $5,009.32

Therefore, the approximate amount of savings is A. $4,516.32. This value is lower than the one calculated since the time of repaying the loan does not change. After 17 years, the borrower only clears the remaining amount of the principle amount.
8 0
2 years ago
Read 2 more answers
Find the height of a clock tower if the angle of elevation from a horizontal point 430 m from its base is 40°.
zaharov [31]

\\ \sf\longmapsto tan40=\dfrac{P}{430}

\\ \sf\longmapsto 0.83=\dfrac{P}{430}

\\ \sf\longmapsto P=430(0.83)

\\ \sf\longmapsto P\approx361m

  • P=Height of tower

5 0
2 years ago
Read 2 more answers
An amusement park's owners are considering extending the weeks of the year that it is opened. The owners would like to survey 10
uranmaximum [27]
The best way to randomly choose the 100 families would be to allow a random number generator to come up with 100 families within a 50 radius of the amusement park.

Using this method would ensure that it is more randomised & not limited to people who come at a specific time or are in a specific area as well as it not be affected by subconscious bias of people when selecting people to survey.
6 0
2 years ago
Read 2 more answers
Other questions:
  • Korey is planning to open a comic book store. He has developed the following expense breakdown for set-up and operation for the
    15·2 answers
  • A sphere with a diameter of 6X centimeters is shown below, which of the following expressions best represents the volume of the
    11·1 answer
  • Which of the following functions is graphed below?(:
    13·2 answers
  • Mark has invested in Evu Confectioners. He owns 220 shares of stock in Evu Confectioners, with each share costing him $14.79 api
    11·2 answers
  • The dimensions of a storage container in the shape of a rectangular prism are 54 in x 32.25 in x 24.5 in. Choose True or False f
    6·2 answers
  • Hugo and Koby are measuring the heights of plants in biology class.
    15·2 answers
  • 4. On square JKLM below, if J is located at
    15·1 answer
  • When a mantis shrimp strikes, its arm-club gets up to a velocity of 23 m/s moving away from its body. Scientists calculate the a
    7·1 answer
  • Compute $14A6_{12} - 5B9_{12}$. Give your answer as a base $12$ integer.
    11·1 answer
  • The SAT and ACT exams are often used to predict a student's first-term college grade point average (GPA). Different formulas are
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!