Name: SAT Math Help & School Math Mastery
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#12041

linear equations

money

systems

easy

45 sec

The cost of a notebook is $n$ dollars, and the cost of a pen is $p$ dollars. A notebook costs twice as much as a pen. If the total cost of one notebook and one pen is $4.50, which system of equations represents this situation?

A.

$p = 2 n$ and $n + p = 4.50$

B.

$n = 4.50 p$ and $n + p = 2$

C.

$n = 2 p$ and $n + p = 4.50$

D.

$p = 4.50 n$ and $n + p = 2$