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
lutik1710 [3]
3 years ago
7

salma purchased a prepaid phone card for $20. long distance calls cost 24 cents a minute using this card. salma used her card on

ly once to make a long distance call. if the remaining credit on her card is $13.52. how many minutes did her call last?
Mathematics
1 answer:
suter [353]3 years ago
3 0
We can set up an equation to solve this problem, but first we need to write out what we know.

$20 overall
$0.24 every minute
$13.52 remaining on the card

Now that we know our information, we can set it up in an equation. 

20 - 0.24x = 13.52

The 20 represents $20 overall when she first got the phone card.
We are then subtracting $20 from how must it costs a minute (which is 24 cents). The 'x' indicates the number we are trying to find (how many minutes her call lasted). Lastly, 13.52 is the result of everything, since she has $13.52 remaining on the card.

We can now solve the equation:

20 - 0.24x = 13.52
-0.24x = 13.52 - 20 /// subtract 20 from each side
-0.24x = -6.48 /// simplify
x = 27 /// divide each side by -0.24

Our solution is: x = 27.

-----

An easier way to solve this problem would be to first, subtract the total amount of money she had on the card when she first got it, and then the remaining total she ended up with.

$20 - $13.52 = $6.48

So, she spent a total of $6.48 on long distance calls, but since we are looking for how many minutes, we need to divide the total she spent and how much it costs per minute.

6.48 ÷ 24 = 27

We receive the same amount of minutes spent just like we did the last way we solved.

-----

Salma spent 27 minutes on the phone. 
You might be interested in
Victor's Video Arcade pays its employees $7.95 per hour for weekday hours and $9.25 per hour for weekend hours. How much will an
Ivan

Answer:

i can't understand ur question

3 0
2 years ago
Please help me. i don’t understand.
levacccp [35]

Answer:

4(x-7)(x+1)

Step-by-step explanation:

5 0
3 years ago
for an art prohect, a cirlce made of construction paper is cut into thirteen equal slices, six of the slices are removed. write
vladimir1956 [14]

Answer:

7/13 slices

Step-by-step explanation:

13-7

4 0
3 years ago
Use the information in the charts to answer the questions.
Sever21 [200]
I think it’s a because it has something to do with estimated and round your answer
6 0
2 years ago
Read 2 more answers
Have y’all seen project power ?
marusya05 [52]
No I have not, sorry
6 0
3 years ago
Read 2 more answers
Other questions:
  • A utility company’s pump moves 1,008 gallons of water in 8 minutes. What is the unit rate in gallons per minute
    12·2 answers
  • 8/25 write as a percent
    8·1 answer
  • A direct variation function contains the points (2, 14) and (4, 28). Which equation represents the function?
    15·2 answers
  • (2a^6b)(3a^3b^3) simplify
    11·2 answers
  • 276x^2−136x+869+−5184x+6
    13·1 answer
  • 3.25+(7.75+4.89) use the associative property to add
    8·2 answers
  • Please help me with this question
    11·2 answers
  • I need help very fast please!
    12·2 answers
  • 1.
    12·2 answers
  • Put these number in order from least to greatest
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!