An alloy contains 30 per cent aluminium. What quantity of alloy will have 300 gm of aluminium?

0.8 kg 1 kg 1.2 kg 0.6 kg

1 kg

Aluminium is 30% of an alloy. 300 gm aluminium is 30% in X Kg alloy, ⇒ \(\frac{30}{100}\) x X = 300 gm, ⇒ X = 1000 gm  ⇒ X = 1 Kg.