Question

In an alloy, there is 15% of brass, to get 90 kg of brass, how much alloy is needed?

• A. 400 kg
• B. 500 kg
• C. 600 kg
• D. 700 kg
• E. None of these

Answer 1

The correct option is C 600 kg

Let X kg of alloy is needed.
So, $\frac{15}{100}$ of X=90
So x=600 kg