Question

copper.
25.
Brass is the allowey of line and
if zinc and copper
are mixed is the natio
of 7:9, then find the weight of Zinc
and copper
in 144
grams of a brass​

Answer 1

Answer:

Weight of zinc and copper is 63gm and 81gm respectively

Step-by-step explanation:

Ratio of weight is 7:9

Let the weight of zinc and copper be 7x amd 9x

Total weight of alloy i.e brass is = 144gm

Then, 7x + 9x = 144gm

          16x = 144gm

           x = 144gm/16 i.e = 9

∴Weight of zinc is 9gm * 7 = 63gm

  And, Weight of copper is 9gm * 9 = 81gm

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