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
Thepotemich [5.8K]
3 years ago
12

Ava bought some pens for $ 2 each and some pencils for $ 1 each. She bought 3 more pens than pencils and spent a total of $ 12.

How many pencils did Ava buy?
Mathematics
1 answer:
Rudiy273 years ago
5 0

Answer:

Step-by-step explanation:

price of 1 pen= $ 2

price of 1 pencil= $1

total money spent= $12

Let the number of pen be a and number of pencil be b.

 2 a + b = 12   ----------------Equation 1

We have, she bought 3 more pens than pencils

  a - b = 3   ------------------  Equation 2

 Equation 1 +Equation 2,  

   2 a + b +  a - b = 12 + 3

                     3a = 15

                     a = 5

 Substituting in  equation

           5 - b = 3

               b = 2

 Number pencils Ava bought = 2

You might be interested in
The line plot below shows the distances of discus throws in a contest.
Scrat [10]
I think is 40 meters
6 0
3 years ago
Solve the system of the linear equation by adding or subtracting.
Natali [406]
X=1 and y=-2  

In ordered pairs it would be (1,0) and (0,-2)
5 0
3 years ago
A fair owner made 18 dollars when a group of 3 people entered which is a rate of dollar per person
Rus_ich [418]

Answer:

$6

Step-by-step explanation:

If a fair owner makes $18 for a group of 3 people, then the amount per person is 18 ÷ 3 = 6. The rate is $6.

7 0
3 years ago
The variable x represents w value in the set {4, 6, 7, 8}. Which value of x makes 2 (x - 4) + 3 = 7 a true statement​
navik [9.2K]
X would be 6 I’m not sure about w.
3 0
2 years ago
A falcon can fly 322 km/h how many meters per hour can the falcon fly
Tju [1.3M]
322 km/h = 322000 meters/h

Hope This Helps :)
8 0
3 years ago
Other questions:
  •  The volume of a cylinder is 169pi in.cubed and the height of the cylinder is 1 in. What is the radius of the​ cylinder? The rad
    11·1 answer
  • \/ Question below \/
    5·1 answer
  • How many solutions does this equation have?<br><br> 9x + 2<br> 3<br> = 3x + 3
    6·2 answers
  • Complete the statement.<br> 6.<br> 42 gal = __L<br> min min
    14·2 answers
  • Work out the surface area of the shapes in the attached file
    6·1 answer
  • Which expression is equivalent to 7√x^2/5√y^3? Assume y≠0
    11·1 answer
  • Please help:)I’m not good at math and need to get this done ASAP
    11·1 answer
  • The admission ticket for Pat Pat Zoo is $1.50 for children and $4.00 for adults. On a certain day, 2200 people went to the zoo a
    15·1 answer
  • The Number of students in a chess club decreased from 24 to 17. What is the percent decrease? Round your answer to the nearest p
    13·1 answer
  • PLEASE HELP ME WITH THIS!!!!!!!!!!!!!!!!!!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!