Calculating Additional Granite Needed for Sam's Aquaponics Garden
Explanation:
Step 1: Convert dkg to grams
1 dkg = 10g
2.3 dkg * 10g = 23g
Sam needs 23 grams of granite in total.
Step 2: Compare total needed with what Sam already has
Sam already has 460g of granite.
23g - 460g = -437g
Since -437g is a negative value, it means that Sam already has more than enough granite for his aquaponics garden. He doesn't need any additional granite.