# One-half cup of black beans provides 15% of the potassium you need daily. You must get the remaining 2890 milligrams from other sources. How many milligrams of potassium should you consume daily?

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Tony B Share
Dec 7, 2016

Total potassium intake required is 3400 milligrams

#### Explanation:

Let the total amount required be $t$

You have 15% already. This means that the amount yet to be taken is:

(100-15)% = 85%

so " "85%t=2890

write as:

$\textcolor{b r o w n}{\frac{85}{100} t = 2890}$

Multiply both sides by $\textcolor{b l u e}{\frac{100}{85}}$

$\textcolor{b r o w n}{\textcolor{b l u e}{\frac{100}{85} \times} \frac{85}{100} \times t = \textcolor{b l u e}{\frac{100}{85} \times} 2890}$

$1 \times t = 3400$

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