1.

In a particular type of alloy the ratio of iron to carbon is 2 : 3. The amount of iron that should be added to 15 kg of this material to make the ratio of the contents1 : 1 is 1). 2 kg2). 3 kg3). 6 kg4). 9 kg

Answer»

Given, IRON : CARBON = 2 : 3

In 15 kg of this ALLOY, we have

AMOUNT of iron $(= \frac{2}{5} \times 15 = 6\;kg)$

amount of carbon $(= \frac{3}{5} \times 15 = 9\;kg)$

Hence, the amount of iron to be added to this mixture to make the ratio of the contents 1:1 is 3 kg of iron.


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