Question

Two types of wheat, one costing Rs. $9$ per kg and the other costing Rs. $13$ per kg are mixed in the ratio $3:1$. The mixture is sold at Rs. $1.25$ per $100$ g. Find the percentage gain.

• A. $20\%$
• B. $15\%$
• C. $25\%$
• D. $18\%$

Answer 1

Answer: (C)

$25\%$

Wheat cost Rs. $9$ per kg weight in mixture $3$ kg, then cost $=$ $9$ $\times 3=27$ Rs

Wheat cost Rs. $13$ per kg weight in mixture $1$ kg, then cost $=$ $13$ $\times 1=13$ Rs

Total weight of mixture $=4$ kg and total cost $=27+13=40$

Then selling cost $=$ $\frac{4\times 1.25\times 1000}{100}=50$ Rs

Gain $=50-40=10$ Rs

$\%$ of gain $=$ $\frac{10\times 100}{40}=25$ $\%$