Every morning, he goes to school by taking the school bus and comes back using his spider superpowers. The total time taken for the round trip in both directions is 1 hour and 30 minutes. If he were to go both directions using his superpowers, it would only take 30 minutes. How much time would he spend if he were to go both directions by bus? A. 2 hours and 30 minutes B. 1 hour C. 2 hours D. 1 hour and 15 minutes

Let \( T_b \) be the bus time for one direction and \( T_s \) be the time using superpowers for one direction. 1. According to the problem, the total time for going to school by bus and coming back by superpowers is: \[ T_b + T_s = 90 \text{ minutes} \] 2. It is also given that if he uses his superpowers both ways, the total time is: \[ 2T_s = 30 \text{ minutes} \] Solving for \( T_s \): \[ T_s = \frac{30}{2} = 15 \text{ minutes} \] 3. Substitute \( T_s = 15 \) minutes into the first equation to find \( T_b \): \[ T_b + 15 = 90 \quad \Rightarrow \quad T_b = 90 - 15 = 75 \text{ minutes} \] 4. If he goes both directions by bus, the total time would be: \[ 2T_b = 2 \times 75 = 150 \text{ minutes} \] Converting minutes to hours: \[ 150 \text{ minutes} = 2 \text{ hours and } 30 \text{ minutes} \] Thus, if he were to go both directions by bus, he would spend \( \boxed{2 \text{ hours and } 30 \text{ minutes}} \).