N1 deskItem( 0 ) cost $C.N1 plural_form(deskItem( 0 ), N1) cost $C.
Which equation would help determine the cost of N2 deskItem( 0 )?Which equation would help determine the cost of N2 plural_form(deskItem( 0 ), N2)?
SOLUTION
\dfrac{N2}{\$C} = \dfrac{x}{N1}
\dfrac{N2}{N1} = \dfrac{\$C}{x}
\dfrac{N1}{N2} = \dfrac{x}{\$C}
\dfrac{x}{N2} = \dfrac{N1}{\$C}
\dfrac{N2}{x} = \dfrac{\$C}{N1}
There are several equations that could help determine the cost, each with a slightly different approach.
We can write the fact that N1 deskItem( 0 ) cost $C as a proportion:
We can write the fact that N1 plural_form(deskItem( 0 ), N1) cost $C as a proportion:
\dfrac{N1}{\$C}
Let x
represent the unknown cost of N2 deskItem( 0 ). Since N2 deskItem( 0 ) cost x
, we have the following proportion:
Let x
represent the unknown cost of N2 plural_form(deskItem( 0 ), N2). Since N2 plural_form(deskItem( 0 ), N2) cost x
, we have the following proportion:
\dfrac{N2}{x}
The cost changes along with the number of deskItem( 0 )s purchased, and so the two proportions are equivalent.
Let x
represent the unknown cost of N2 deskItem( 0 ). Since N2 deskItem( 0 ) cost x
, we have the following proportion:
Let x
represent the unknown cost of N2 plural_form(deskItem( 0 ), N2). Since N2 plural_form(deskItem( 0 ), N2) cost x
, we have the following proportion:
\dfrac{N2}{x}
We can write the fact that N1 deskItem( 0 ) cost $C as a proportion:
We can write the fact that N1 plural_form(deskItem( 0 ), N1) cost $C as a proportion:
\dfrac{N1}{\$C}
The cost changes along with the number of deskItem( 0 )s purchased, and so the two proportions are equivalent.
We know the cost of N1 deskItem( 0 ).We know the cost of N1 plural_form(deskItem( 0 ), N1). We want to know the cost of N2 deskItem( 0 ).We want to know the cost of N2 plural_form(deskItem( 0 ), N2). We can write the numbers of plural_form(deskItem( 0 )) as a proportion:
\dfrac{N1}{N2}
We know N1 deskItem( 0 ) costs $C.We know N1 plural_form(deskItem( 0 ), N1) costs $C.
We can let x
represent the unknown cost of N2 deskItem( 0 ).We can let x
represent the unknown cost of N2 plural_form(deskItem( 0 ), N2).
The proportion of these costs can be expressed as:
\dfrac{\$C}{x}
The cost changes along with the number of deskItem( 0 )s purchased, and so the two proportions are equivalent.
If we let x
represent the cost of N2 deskItem( 0 ), we have the following proportion:
If we let x
represent the cost of N2 plural_form(deskItem( 0 ), N2), we have the following proportion:
\dfrac{x}{N2}
We have to pay $C for N1 deskItem( 0 ), and that can be written as a proportion:
We have to pay $C for N1 plural_form(deskItem( 0 ), N1), and that can be written as a proportion:
\dfrac{\$C}{N1}
Since the price per deskItem(0) stays the same, these two proportions are equivalent.
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