Question

In a particular type of 10 kg of alloy, the ratio Copper to Carbon is 3:2. Now, $2kg$ of Copper is added to the mixture.
Choose the correct options below:

• A. The ratio of Copper to Carbon will be 2:1
• B. The ratio of Copper to Carbon will be 1:1.
• C. The amount of copper initially in the mixture is 6kg.
• D. The amount of copper finally in the mixture is 8 kg.

Answer 1

Answer: (A), (D)

The correct options are
A

The ratio of Copper to Carbon will be 2:1

D

The amount of copper finally in the mixture is 8 kg.

Initially, amount of the Copper in 10kg of alloy = $\frac{3}{5}\times 10=6kg$
Amount of carbon in 10kg of alloy=(10-6)=4kg
After adding 2kg of Copper, the total amount of copper=(6+2)kg= $8kg$
$\therefore \frac{Copper}{carbon}=\frac{8}{4}=2:1$
Hence, (B) and (C) are correct options.