1.

An alloy of zinc and copper weights 12 and half kg. If, in the alloy, the ratio of zinc and copper is 1:4,find the weight of copper in it. ​

Answer»

ANSWER:

CU=10kg, Zn=2.5kg

Step-by-step EXPLANATION:

Cu+Zn=12. 5kg

Zn:Cu= 1:4

  • Zn=Cu/4

Cu+Zn=12. 5

  • Cu+Cu/4=12. 5
  • 4C+Cu=12.5*4
  • 5Cu=50.0
  • Cu=50/5
  • =10kg

Zn=Cu÷4

=10÷4

=2.5kg



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