Answer:
X = 45
Step-by-step explanation:
90 + X + A = 180 (angles of a triangle sum to 180)
90 + X + 45 = 180
X = 45
The answer will be close to 470 1/2
Assuming the pilcrow is supposed to represent pi:

100
The pack of pencils weighs 21.6 grams because 0.9 times 24 is 21.6