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Simplifying 4000 = 2000(8) * r Multiply 2000 * 8 4000 = 16000r Solving 4000 = 16000r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-16000r' to each side of the equation. 4000 + -16000r = 16000r + -16000r Combine like terms: 16000r + -16000r = 0 4000 + -16000r = 0 Add '-4000' to each side of the equation. 4000 + -4000 + -16000r = 0 + -4000 Combine like terms: 4000 + -4000 = 0 0 + -16000r = 0 + -4000 -16000r = 0 + -4000 Combine like terms: 0 + -4000 = -4000 -16000r = -4000 Divide each side by '-16000'. r = 0.25 Simplifying r = 0.25
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