Jewelry marked 18- karat gold is 75% pure gold. How much pure gold is in an 18-karat gold necklace that weighs 258 grams
1 answer:
Answer:
The weight of pure gold in 258 g rams of 18- karat gold is 193.5 grams.
Step-by-step explanation:
The pure percentage in the gold = 75%
The weight of the gold purchased = 258 g
Now, here the pure gold percentage is 75% of 258 g
75% of 258 grams =
or,
⇒75% of 258 grams = 193.5 grams
Hence, the weight of pure gold in 258 g rams of 18- karat gold is 193.5 grams.
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Answer:
B
Step-by-step explanation:
The volume (V) of a triangular prism is
V = area of triangular end × length
area of Δ = bh
where b is the base and h the perpendicular height
here b = 8 and h = 5, so
area = 0.5 × 8 × 5 = 20 units²
the length of the prism is 10, hence
V = 20 × 10 = 200 units³