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**Jonboy** Hi everyone again. These problems are tough... I need help... ¡Necesito Ayuda! ;)

In electrical theory, Ohm's law states that $\displaystyle I\,=\,\frac{V}{R}$, where $\displaystyle I$ is the current in amperes, $\displaystyle V$ is the electromotive force in volts, and $\displaystyle R$ is the resistance in Ohms.

In a certain circuit V = 110 and R = 50. If V and R are to be changed by the same numerical amount, what change in them will cause $\displaystyle I$ to double?

First I thought it would be imperative to find the new doubled amount.

So currently we have: $\displaystyle I\,=\,\frac{110}{50}\,=\,\frac{11}{5}$

Double that would be $\displaystyle \frac{22}{10}$

I don't see how to make an equation to increase both the V and R by a constant number. Please help and thanks everyone.