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3 years ago

6

Please be quick! I need this as soon as possible!

2 answers:

Ber [7]3 years ago

7 0

Answer:

<h2>64%</h2>

Step-by-step explanation:

$\bold{METHOD\ 1:}\\\\\begin{array}{ccc}25g&-&100\%\\\\16g&-&p\%\end{array}\qquad\text{cross multiply}\\\\\\25p=(16)(100)\\25p=1600\qquad\text{divide both sides by 25}\\\boxed{p=64}$

$\bold{METHOD\ 2}:\\\\\begin{array}{cccc}25&-&100\%&\text{divide both sides by 25}\\\\\dfrac{25}{25}&-&\dfrac{100\%}{25}\\\\1&-&4\%&\text{multiply both sides by 16}\\\\(1)(16)&-&(4\%)(16)\\\\16&-&64\%\end{array}$

Katarina [22]3 years ago

5 0

Answer:

64%

Step-by-step explanation:

The nickel= 9/25

The copper=16/25

1. Multiply by 4 to get a total of 100

nickel=36/100

copper= 64/100

Sorry if it is wrong but i hope i was right

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