Question

PLEASE HELP !!

Answer 1

Answer:

C. 15

Step-by-step explanation:

Given:

$4x + 2y = 50 \hspace{18mm} (1) \hspace{15mm} x - 3y = 30 \hspace{20mm} (2)$

Dividing Eqn. (1) thorough out by 2, we get $2x + y = 25 \hspace{15mm} (3)$

To solve for $x$, multiply (3) by 3 and add (2) and (3).

i.e., $6x + 3y - 75 + x - 3y - 30 = 0$

$\implies 7x = 105$

$\implies x = 15$