Question

You and your friend spent a total of $15 for lunch. Your friend’s lunch cost $3 more than your lunch cost. How much did you spend for lunch? a. x + 3x = 15; $3.75 c. 2x + 3 = 15; $6 b. 2x - 3 = 15; $9 d. 3x - x = 15; $7.50

Answer 1

$x = you \\ x + 3 = your \: friend$
$x + (x + 3) = 15 \\ 2x + 3 = 15$
The answer is C.