An alloy contains 30 per cent aluminium. What quantity of alloy will have 300 gm of aluminium?
This questions was previously asked in
SSC MTS 13th July 2022 Shift-2
Explanation:
- The alloy consists of 30% aluminum.
- To find the total weight of the alloy needed to contain 300 grams of aluminum, use the formula:
\[
\text{Total Alloy Weight} = \frac{\text{Amount of Aluminum}}{\text{Percentage of Aluminum in Alloy}}
\]
- Substitute the values:
\[
\text{Total Alloy Weight} = \frac{300 \text{ gm}}{0.3} = 1000 \text{ gm} = 1 \text{ kg}
\]
- Option 1: 0.8 kg – This is too low. It would contain only 240 grams of aluminum.
- Option 2: 1 kg – This is correct. It contains exactly 300 grams of aluminum.
- Option 3: 1.2 kg – This is too high. It would contain 360 grams of aluminum.
- Option 4: 0.6 kg – This is too low. It would contain only 180 grams of aluminum.