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If Josie buys 2.4 KG of beads for $3.25 per kilogram, how much will her beads cost?

  1. $7.80

  2. $8.40

  3. $780

  4. $10.00

The correct answer is: $7.80

To determine the total cost of the beads Josie purchases, you need to multiply the weight of the beads by the price per kilogram. In this case, Josie buys 2.4 kilograms of beads at a price of $3.25 per kilogram. The calculation involves multiplying 2.4 by 3.25: 2.4 kg × $3.25/kg = $7.80. This shows that the total cost for 2.4 kilograms of beads is indeed $7.80. The other choices represent either inflated amounts or incorrect conversions based on either incorrect multiplication or misunderstanding of the quantity and pricing units involved. Thus, the calculation confirms that Josie's beads cost $7.80, validating the selected answer.