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The cost of a book is three times the co...

The cost of a book is three times the cost of a note book , write it in equation form using two variables.

A

`x+3y`

B

`x-3y`

C

`x+3y=0`

D

`x=3y`

Text Solution

AI Generated Solution

The correct Answer is:
To write the given statement in equation form using two variables, we can follow these steps: ### Step 1: Define the Variables Let: - \( x \) = cost of a book - \( y \) = cost of a notebook ### Step 2: Translate the Statement into an Equation According to the problem, the cost of a book is three times the cost of a notebook. This can be expressed mathematically as: \[ x = 3y \] ### Step 3: Write the Final Equation Thus, the equation that represents the relationship between the cost of a book and the cost of a notebook is: \[ x - 3y = 0 \] or simply, \[ x = 3y \] ### Final Equation The final equation in two variables is: \[ x = 3y \] ---
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