Lets think they have cards, Alex = x , Gil = y and Meg = z. Then,
x+y+z = 740
Alex had 20 fewer cards than Gil. So,
x+20 = y
Alex had 120 fewer cards than Meg. So,
x+120 = z
x+(x+20)+(x+120) = 740
3x + 140 = 740
x= 200
y= 220
z= 320
<span>So Alex had 200 cards, Gil had 220 cards and Meg had 340 cards</span>
Sum of opp. interior angles = ext. angle
sum of all interior angle in a trangle = 180 deg
Two numbers, one being 12, are multiplied to equal 48.
Therefore, the answer is B) 12x = 48
