Question

the ratio of mass of zinc and copper in a alloy is 5 ratio 9 if the mass of alloy is 11 ratio 2 kg find the mass of zinc in it​

Answer 1

Answer:

1 KG

Explanation:

Let ratios be 5x : 9x  

mass of Zn + mass of Cu = 11.2

5x + 9x = 11.2

14x = 11.2

x = 11.2/14

x = 0.2

mass of zinc = 5x= 5×0.2

= 1 kg ANSWER

Answer 2

Answer:

Let the mass of zinc and copper in the 5x kg and 9x kg respectively .

mass of the alloy = 11.2 kg

= 5x + 9x = 11.2

= 14x = 11.2

= X = 11.2/14

= 0.8

Mass of zinc = 5x kg

= (5×0.8)kg = 4kg

Hence, the mass of zinc in the alloy is 4kg .