jasminecoronetti44
11.12.2019 •
Mathematics
At a local music store cd singles are sold for 6.99 and cd albums are sold for 10.99 one day there were 25 cds sold and the sales totaled 230.75 how many of each type of cd were sold
Solved
Show answers
More tips
- C Computers and Internet How to Format Your C Drive: Detailed Guide and Tips...
- F Food and Cooking How to Properly Cook Buckwheat?...
- F Food and Cooking How Many Grams Are In a Tablespoon?...
- L Leisure and Entertainment Carving: History and Techniques for Creating Vegetable and Fruit Decorations...
- P Photography and Videography How to Choose the Perfect Photo Paper for Your Images?...
- H Health and Medicine What vaccines do children need?...
- H Health and Medicine Reasons for the Appearance of Warts: Everything You Need to Know...
- A Art and Culture How to Learn Screaming: Step-by-Step Guide for Beginners...
- H Health and Medicine Contraceptive Pills After 35: The Importance Of Choosing The Right Medication...
- C Computers and Internet How to Choose a Monitor?...
Answers on questions: Mathematics
- M Mathematics Can someone explain how to work this problem out in words?...
- M Mathematics You need 1 1 4 114 cups of sugar to make 20 cookies. how many cups of sugar will you need to make 14 cookies?...
- M Mathematics 6inches edgesof what s the volume of jewelry box...
- M Mathematics Which of these words does not mean the same thing as domain? input first element second element x-value...
- M Mathematics Determine the measure of the minor arc, if the measure of its major arc is 200°. a. 200° b. 160° c. 20° d. 100°...
- M Mathematics Atriangle with measures of x∘, 2x∘, and 2x∘ is a(n) triangle....
- M Mathematics Find functions f and g so that h(x) = (f ∘ g)(x). h(x) = (6x - 14)^8 a) f(x) = 6x - 14, g(x) = x^8 b) f(x) = 6x^8 - 14, g(x) = -14 c) f(x) = x^8, g(x) = 6x - 14 d) f(x)...
- M Mathematics Need with this page. not sure if these are correct....
- M Mathematics Last year 640 cars and 160 pickups were sold at a car lot. this year the number of cars sold increased by 10%. in the same period, the number of pickups sold decreased buy...
- M Mathematics The equation sin ( (pi/3) - x ) is equal to a. 1/2( sqrt(3) cosx + sinx) b. 1/2(sqrt(3) cosx - sinx) c. 1/2(cosx- sqrt(3) sinx) d. 1/2 (cosx + sqrt(3) sinx)...
Ответ:
The number of cd singles that were sold is 11
The number of cd albums that were sold is 14
Step-by-step explanation:
Given as :
The price for each cd singles = $6.99
The price for each cd albums = $10.99
The Total number of cd's sold on day = 25
The total sales amount of both cd's = $230.75
Let The numbers of cd singles = s
And The number of cd albums = a
Now, According to question
The total sales amount of both cd's = The price for each cd singles × The numbers of cd singles + The price for each cd albums × The number of cd albums
So, $6.99 × s + $10.99 × a = $230.75 .................A
And s + a = 25 ..................B
Now, solving eq A and B
I.e ( $6.99 × s + $10.99 × a ) - $6.99 × ( s + a ) = $230.75 - $6.99 × 25
Or, ( $6.99 × s - $6.99 × s ) + ( $10.99 × a - $6.99 a ) = $230.75 - $174.75
Or, 0 + 4 × a = 56
∴ a =
I.e a = 14
So, the number of cd albums = a = 14
Now, put the value of a in Eq B
I.e s + a = 25
Or, s = 25 - a
Or, s = 25 - 14
∴ s = 11
So, the number of cd singles = s = 11
Hence, The number of cd singles that were sold is 11 and The number of cd albums that were sold is 14 . Answer
Ответ: