130 \% \% = p \cdot 4
Solve for p
p=\frac{13}{4000}=0.00325
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\frac{130}{100}=100p\times 4
Multiply both sides of the equation by 100.
\frac{13}{10}=100p\times 4
Reduce the fraction \frac{130}{100} to lowest terms by extracting and canceling out 10.
\frac{13}{10}=400p
Multiply 100 and 4 to get 400.
400p=\frac{13}{10}
Swap sides so that all variable terms are on the left hand side.
p=\frac{\frac{13}{10}}{400}
Divide both sides by 400.
p=\frac{13}{10\times 400}
Express \frac{\frac{13}{10}}{400} as a single fraction.
p=\frac{13}{4000}
Multiply 10 and 400 to get 4000.
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