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
kotegsom [21]
3 years ago
7

It takes 20 minutes for 5 people to paint 5 walls how many minutes does it take 9 people to paint 9 walls

Mathematics
2 answers:
nirvana33 [79]3 years ago
8 0

Answer: 20 minutes

Step-by-step explanation:

Imagine that each person is assigned one wall, and all 5 people begin painting at the same time.

Since everyone will finish painting their assigned wall after 20 minutes, it takes one person 20 minutes to paint one wall.

If we have 9 people and 9 walls, we can again assign one wall to each person.

Everyone will take 20 minutes to paint their assigned wall.

In other words, it takes 20 minutes for 9 people to paint 9 walls.

Ivenika [448]3 years ago
3 0

5×4 is 20. So I figure 9×4 is 36. 36 minutea

You might be interested in
A chef got 7 bags of onions. The red onions came in bags of 8 and the yellow onions came in bags of 3. If the chef got a total o
frutty [35]

Answer:

\#\text{ of 8-onion bags: }4,\\\#\text{ of 3-onion bags: }3

Step-by-step explanation:

Let a be the number of bags with 8 onions and let b be the number of bags with 3 onions. We have the following system of equations:

\begin{cases}a+b=7,\\8a+3b=41\end{cases}

Subtracting b from both sides of the first equation, we get a=7-b. Substitute this into the second equation:

8(7-b)+3b=41,\\56-8b+3b=41,\\56-5b=41,\\-5b=-15,\\b=\boxed{3}

Therefore, the number of 8-onion bags is:

a=7-b,\\a=7-3,\\a=\boxed{4}

Thus, the chef got 4 8-onion bags and 3 3-onion bags.

5 0
3 years ago
Mark is treating his family to ice cream. He buys 4 sundaes and 3 cones for a total of $26. Brian also buys ice cream for his fa
Elina [12.6K]
<span>Jesse loves to make cookies. She makes chocolate chip cookies 4 out of every 5 times she makes cookies. If she makes cookies 55 times, how many times will she not make chocolate chip cookies?</span>
4 0
3 years ago
Which would be the best name for a function that takes the size of an engine and returns the maximum speed of a car?
ad-work [718]

Answer:

Size

Step-by-step explanation:

Just got the answer out

4 0
3 years ago
Read 2 more answers
10.
harina [27]
The answer is D.. :)
7 0
2 years ago
A department store is having a 15% off sale on all winter coats. You purchase a coat for $275. The department store is located i
Alexxandr [17]
The sum of tax and discount will given by:
(15+7.25)%
=22.25%
Total percentage of the total cost will be:
100+22.25%=122.25%
the selling price of the court will be:
122.25/100×275
=4336.187
The answer is 4336.20

8 0
3 years ago
Read 2 more answers
Other questions:
  • The sum of two numbers is 18. The larger number is twice as large as the smaller number. What are the two numbers? Please explai
    13·1 answer
  • Here is another math question 9 hours is greater than or less than or equal to 450 minutes
    14·1 answer
  • I need help with 6 and 10
    8·2 answers
  • A random experiment consists of tossing a fair coin five times and recording the number of tails. What is the sample space?
    8·1 answer
  • Which transformation of a scalene triangle produces an image that is similar, but not congruent, to the original
    10·2 answers
  • Consider two congruent triangular prisms. Each rectangular face of prism A has a width of x + 3 and each rectangular face of pri
    11·2 answers
  • What will be the multipicative inverse of -1/4??
    7·1 answer
  • Simplest form of 20/6 divided by 2
    6·2 answers
  • HELP ASAP<br><br> answers:<br> O 1<br> O 2<br> O 3<br> O 0
    7·1 answer
  • 1,2,2,4,8,32,? what comes next?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!