Question

9. An alloy contains 30% of zinc. How many
kilograms of the alloy will be required to obtain
12
kg of zinc?​

Answer 1

Answer:

plz refer to the picture attached

Step-by-step explanation:

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Answer 2

Answer:

40 kg of allow

Step-by-step explanation:

In 1kg of allow = 30% is zinc

= 30% of 1kg

= 30/100 X 1000g

= 300g

hence, in 1 kg allow we obtain 300g of zinc

therefore, 12 kg of zinc needs

= 1200g/300g

= 40 kg allow