Erin buys a bag of peanuts that weighs of 3/4 of a pound. Later that week, the bag is 2/3 full. How much does the bag of peanuts weigh now?

(2/3) * (3/4) = 6/12 = 1/2 pound

To find out how much the bag of peanuts weighs now, we need to multiply the weight of the bag by the fraction representing how full it is.

Step 1: Convert the weight of the bag from a fraction to a decimal.
The weight of the bag is 3/4 of a pound. To convert this fraction to a decimal, divide the numerator (3) by the denominator (4):
3 ÷ 4 = 0.75

Step 2: Calculate how much of the bag is filled.
The bag is filled 2/3. To convert this fraction to a decimal, divide the numerator (2) by the denominator (3):
2 ÷ 3 = 0.67

Step 3: Multiply the weight of the bag by the fraction representing how full it is.
0.75 pounds x 0.67 = 0.5025 pounds

Therefore, the bag of peanuts now weighs approximately 0.5025 pounds, or 0.5 pounds (rounded to the nearest tenth).