Consider the following electric circuit : Calculate the values of the following : (a) The total resistance of the circuit (b) The total current drawn from the source (c) Potential difference across the parallel combination of $10\ \Omega$ and $15\ \Omega$ resistors

To solve this question, we need to use the concepts of electric circuits and Ohm's law. The total resistance of the circuit can be calculated by adding the individual resistances in series. The total current drawn from the source can be calculated using Ohm's law. The potential difference across the parallel combination of 10Ω and 15Ω resistors can be calculated using the formula for the potential difference across a resistor in a parallel circuit. Therefore, the correct answer is not provided as it is a numerical value question.