Question

the ratio of copper and zinc in an alloy is 9:7. if the weight of zinc in the alloy is 9.8kg, find the weight of copper​

Answer 1

Answer

Let,the weight of copper and zinc be 9x kg and 7x.

According to the question,

7x= 9.8

or, x= 1.4

Weight of copper = 9 x

                             =  9 * 1.4

                             = 12.6 kg