Question

6. A metal is made from copper, zinc and lead in the ratio 13:6:1

respectively. The mass of zinc is 90kg. Calculate the mass of the
metal. ​

Answer 1

Given:

A metal is made from copper, zinc and lead in the ratio 13:6:1.

The mass of zinc is 90kg.

To find:

The mass of the metal.

Solution:

It is given that the metal is made from copper, zinc and lead in the ratio 13:6:1.

Let the mass of copper, zinc and lead are 13x, 6x and 1x respectively.

The mass of zinc is 90kg. So,

`6x=90`

`x=(90)/(6)`

`x=15`

Now, total mass of the metal is:

`Total=13x+6x+1x`

`Total=20x`

`Total=20(15)`

`Total=300`

Therefore, the mass of the metal is 300kg.