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saw5 [17]
3 years ago
10

A used book store also started selling used CDs and videos. In the first week, the store sold 40 used CDs and videos, at 4.00 pe

r CD and 6.00 per video. The sales for both CDs and videos totaled to 180.00.
Mathematics
1 answer:
masha68 [24]3 years ago
4 0

Answer:

30 CDs and 10 Videos were sold.

Step-by-step explanation:

Given that a used book store also started selling used CDs and videos. In the first week, the store sold 40 used CDs and videos, at 4.00 per CD and 6.00 per video.

The sales for both CDs and videos totaled to 180.00.

Let CDs be x and Videos be y

Then we have x+y =3040

and 4x+6y = 180

Two simultaneous equations in two variables and can be solved by elimination method

multiply I equation by 4 and subtract from II.

2y = 20

y =10

x = 30

30 CDs and 10 Videos were sold.

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c

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You are planning to put a new digital flat t.v on a wall that is 12ft long and 9ft high. the digital t.v has a diagonal of 72 in
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7 0
3 years ago
Brianna went to the store to buy some clothes. She bought 9 pairs of pants at $20 per pair of pants, and 11 shirts that cost $15
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$345 : whichever is closest

Step-by-step explanation:

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5 0
3 years ago
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7 0
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