Answer:
48 grams
Step-by-step explanation:
pretzels : peanuts : cheese sticks
   8    :    5    :    1
 64 g    :   ? g    :    ? g
grams of peanuts = 5*64 / 8 = 40 g
grams of cheese sticks = 64*1 /8 = 8 g
grams of peanuts and cheese sticks = 40 + 8 = 48 grams