menu
QAmmunity.org
Login
Register
My account
Edit my Profile
Private messages
My favorites
Register
Ask a Question
Questions
Unanswered
Tags
Categories
Ask a Question
Mark went to an electronic store, purchased 2 CDs and 6 DVDs, and spent $156. Antonio went to the same store, bought 1 CD and 9 DVDs, and spent $210. How much does each CD sell for at the store? $12 $15
asked
Sep 21, 2017
200k
views
4
votes
Mark went to an electronic store, purchased 2 CDs and 6 DVDs, and spent $156. Antonio went to the same store, bought 1 CD and 9 DVDs, and spent $210. How much does each CD sell for at the store? $12
$15
$18
$22
Mathematics
high-school
Equidamoid
asked
by
Equidamoid
6.6k
points
answer
comment
share this
share
0 Comments
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
2
Answers
5
votes
Answer:
A.12
Explanation:
Got it right on the test
Hope this helps :)
Harry Moreno
answered
Sep 23, 2017
by
Harry Moreno
7.2k
points
ask related question
comment
share this
0 Comments
Please
log in
or
register
to add a comment.
3
votes
For the answer to the question above,
Let C be CD's
Let D be DVD's
2C + 6D = 156
C + 9D = 210
6D = 156 - 2C
3D = 78 - C
C + 9D = 210
C + 3(78 - C) = 210
C + 234 - 3C = 210
234 - 210 = 3C - C
24 = 2C
12 = C
The cost of one CD is $12, so the answer is a.
Tomtheengineer
answered
Sep 25, 2017
by
Tomtheengineer
7.4k
points
ask related question
comment
share this
0 Comments
Please
log in
or
register
to add a comment.
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.
7.6m
questions
10.2m
answers
Other Questions
How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
Twitter
WhatsApp
Facebook
Reddit
LinkedIn
Email
Link Copied!
Copy
Search QAmmunity.org