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garri49 [273]
3 years ago
14

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

Mathematics
1 answer:
inysia [295]3 years ago
7 0

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=\dfrac{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.

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Given the table below representing the number of hours of television nine Math II class students watched the night before a big test on triangles along with the grades they each earned on that test.

\begin{center}
\begin{tabular}
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<span>A student that watched 1.5 hours of TV will have a score given by
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