Answer:
She sold 72 small photos and 54 large photos.
Step-by-step explanation:
We can set a equations system with the given information. Let X be the quantity of small photos and Z large photos.
We are told that she sold 126 photos in total, so:
X + Z = 126
Also, she earned 2,250 by selling certain quantities of small photo and large photos, so:
$2,250 = $11X + $27Z
From the first equation we get that X=126-Z, replace that into the 2nd equation:
2,250 = 11(126-Z) +27Z
2,250 = 1,386 - 11Z + 27Z
2,250 - 1,386 = 16Z
864 = 16Z
Z = 864/16
Z = 54 is the number of large photos sold. Now find X.
X = 126 - Z
X = 126 - 54
X = 72 is the number of small photos sold.
