Please anyone answer this one and get it right

300

-100

Step-by-step explanation:

-50 + -250 = -300

-300 + x = 0

x = 300

-425 + 250 + 275 = 100

-100 + x = 0

x = -100

28+24=52
So we make a sum of what's going to equal 52 in small packets.
I found 4x13=52. 13 would be the number of packets
BUT!! Since it MUST be equal dark and milk and we have 28 and 26,
you would have to eliminate 1 pack because all 4 would be milk chocolate.
So that is only 12 packets.
4 per pack so that would be 2 dark and 2 milk per packet.