Explain how you would convert a measurement given in ounces in pints
1 answer:
Answer:
It is known that 1 pint equals 16 ounces
Step-by-step explanation:
It is known that 1 pint equals 16 ounces. Then we use this data to transform a number of ounces into pints.
Suppose we have x ounces. We want to know how many pints are these x ounces. Then we perform the following operation
Where z pints is the amount equivalent to x ounces
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Answer:
Cost of 1 DVD is $6.5
Cost of one CD is $4.5
Combine cost of one DVD and CD is $11
Step-by-step explanation:
Given :
Kate bought 3 used CDs and 1 used DVD at the bookstore.
Her friend Joel bought 2 used CDs and 2 used DVDs at the same store.
Kate spent $20
Joel spent $22
To Find : the cost of a used CD and a used DVD
Solution :
Let cost of 1 used CDs be $x
Let cost of 1 used DVDs be $y
Cost of 3 used CDs = $3x
Cost of 2 used CDs = $2x
Cost of 2 used DVDs = $2y
Kate bought 3 used CDs and 1 used DVD at the bookstore.
She spent $20
So, equation becomes :
⇒ ---(a)
Joel bought 2 used CDs and 2 used DVDs. she spent $22.
So, equation becomes:
⇒ --(b)
Now solve (a) and (b) to determine the value of x and y
We will use substitution method
Substitute the value of x from (b) in (a)
Thus cost of 1 DVD is $6.5
Now substitute this value of y in b to get value of x
⇒
⇒
⇒
⇒
⇒
⇒
Thus the cost of one CD is $4.5
Hence the combine cost of one DVD and CD = $6.5+ $4.5=$11