Question

A container contains mixture of 50 gm zinc and 120 gm copper. 68 gm of mixture is taken out and some
amount of zinc and copper are added in ratio of 3:1. Now ratio of zinc and copper becomes 45:46. Find the
amount of
zinc added in the mixture?​

Answer 1

Step-by-step explanation:

Given,

Weight of zinc in the alloy =9.8kg

The ratio of copper and zinc in an alloy =9:7.

Let,

Weight of copper =9x

Weight of zinc =7x

9.8=7x

x=1.4kg

∴ Weight of copper in the alloy =9x

=9(1.4)

=12.6kg