1.

An alloy of zinc and copper weighs 12 1⁄2 kg. If, in the alloy, the ratio of zinc and copper is1:4 , find the weight of copper in it.

Answer»

Answer:

10 kg

Step-by-step explanation:

FIRST WRITE the things already given in question

12 ½kg= 25/2

sum of ratio is 5

so,

zinc= 1/5×25/2

= 5/2 kg

copper = 4/5×25/2

= 10 kg

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