Answered

Discover a wealth of knowledge at Westonci.ca, where experts provide answers to your most pressing questions. Connect with a community of experts ready to provide precise solutions to your questions quickly and accurately. Join our Q&A platform to connect with experts dedicated to providing accurate answers to your questions in various fields.

The cost of 3 DVDs and 4 CDs is £62.00. The cost of 4 DVDs and 3 CDs is £64.00. Find the cost of each.

Sagot :

birukberiso82

Answer:

10DVD,8CDS

Step-by-step explanation:

3x+4y=62. and. 4×+3y=64

3x=62-4y

x=(62-4y)/3

using substitution

4((62-4y)/3)+3y=64

248/3-16/3y+3y=64

82.67-5.34y+3y=64

82.67-2.34y=64

82.67-64=2.34y

18.67=2.34y

y=7.97

so,x will be 62-4y(1/3)

62-4(7.97)(1/3)

x=10.04
Answer:
x = 10; y = 8
Step-by-step explanation:
Let
DVDs = x
CDs = y
3x + 4y = 62 (1)
4x + 3y = 64 (2)
Multiply (1) by 4 and (2) by 3 to eliminate x
12x + 16y = 248 (3)
12x + 9y = 192 (4)
Subtract (4) from (3)
16y - 9y = 248 - 192
7y = 56
y = 56/7
y = 8
Substitute y = 8 into (1)
3x + 4y = 62
3x + 4(8) = 62
3x + 32 = 62
3x = 62 - 32
3x = 30
x = 30/3
x = 10
x = 10; y = 8
We hope this information was helpful. Feel free to return anytime for more answers to your questions and concerns. Your visit means a lot to us. Don't hesitate to return for more reliable answers to any questions you may have. Get the answers you need at Westonci.ca. Stay informed by returning for our latest expert advice.