Exercise: Battery charge control $($homework$)$

A battery charge control system warns of its state by means of two light emitting diodes $($LEDs$),$ one yellow and the other red, which are lit according to the level of charge of the battery $(V_{\text{B}\text{a}\text{t}}$ voltage$)$ with respect to a reference level $V_{cC}.$

Deduce the $V_{\text{B}\text{a}\text{t}}$ voltage values that lit each LED. Infer what is the state of each LED when the other is on$.$

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