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
alina1380 [7]
3 years ago
13

Henry is buying school supplies for the start of the school year. For every 3 pencils he buys 2 pens. If Henry buys 21 pencils,

how many total pencils and pens did Henry purchase?
Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
3 0

Remark

The total number of items bought is represented by 2 + 3 = 5. So for pencils to pencils + pens his ratio of pencils to total is  3/5

Equation

3/5 = 21 / x   Cross multiply

3x = 5 * 21

3x = 105

x = 105/3

x = 35

Conclusion

The total number of pens and pencils that he bought was 35 <<< Answer.

Note

He bought 35 - 21 = 14 pens. That should be 2/5 of the total.

Check

2/5 * 35 = 70/5 = 14 So it checks.


You might be interested in
I need help with this story problem.. 8th Grade Chapter 9.3 Linear Functions:
Paladinen [302]
(1/5)x + 8 This will find 20% of the wholesale cost and add the $8 markup, where 'x' is the wholesale cost
8 0
3 years ago
An 8-pack of candy bars costs $7.28. What is the unit price?<br> plz help
Darya [45]
7.16 dpollars for one candy bar
5 0
3 years ago
If $40 equals 15 gallons, how much money is in 3 gallos? this is due soon pls help
kiruha [24]

Answer:

$8

Step-by-step explanation:

$40:15 gallons

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>:3 gallons

So first you say what did you do to 15 to get three?

15÷3= 5

Now you divide forty by five since that is what you did to 15 to get three.

40÷5= 8

6 0
3 years ago
0=-20.5x+16.35x-0.1245
Pachacha [2.7K]

The value of x in the given equation -20.5x+16.35x -0.1245 = 0\\ is 0.03

<u>Step-by-step explanation:</u>

The given equation is that -20.5x+16.35x -0.1245 = 0\\

<u>The steps to be followed to solve the equation are :</u>

Add the like terms together to reduce the equation in a simplified form.

Here, there are two x terms and they must be reduced to a single term.

For this, add the both terms together so that the equation is simplified into one x term and a constant term.

⇒ (-20.5x+16.35x) - 0.1245 = 0

⇒ 4.15x-0.1245 = 0

To eliminate the constant term on the left side of the equation, add 0.1245 on both sides.

⇒ 4.15x -0.1245+0.1245 = 0.1245

⇒ 4.15x = 0.1245

Now, the equation is further simplified by dividing 4.15 on both sides,

⇒ 4.15x / 4.15 = 0.1245/4.15

⇒ x = 0.03

Therefore, the value of x is 0.03

7 0
3 years ago
A number x divided by 36
drek231 [11]

Answer:

x/36 is what you're looking for my guy

7 0
1 year ago
Other questions:
  • 1. Which sequence of transformations takes A to its image,B ?
    15·1 answer
  • the base of a triangle and a parallelogram are the same length there Heights are also the same if the area of the parallelogram
    5·1 answer
  • You have 20 shirts in your closet 4 blue 7 red 3 green and 6 black you pick one without looking what is the probability that you
    15·1 answer
  • Calculate the area of the shape​
    7·2 answers
  • Plz help I will mark you brainlist plz ​
    14·2 answers
  • Negative sixteen plus the quotient of a number and -4 is -3
    7·2 answers
  • Megan is making a quilt. She bought 1/3 yard of fabric to use for the border of the quilt.
    14·2 answers
  • - A total of $12,000 is deposited into two accounts. One
    7·1 answer
  • Identify a rational number among the following numbers :<br> 2 + √2, 2√2, 0 and π
    9·1 answer
  • The reference to beetles in lines 5-6 serves
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!