एका गाडीचा वेग जर ताशी 8 कि.मी. वाढवला तर ती 440 कि.मी. चा प्रवास करण्यासाठी 30 मिनिटे कमी घेते तिचा सध्याचा वेग किती ?

The correct answer is Option C (80 km/hr).

Key Points:
• Let the current speed be v km/hr. Time taken = Distance / Speed.
• Original time t₁ = 440 / v. New time t₂ = 440 / (v + 8).
• The time difference is 30 minutes, which is (1)/(2) hour. So, (440)/(v) - (440)/(v+8) = (1)/(2).
• Testing the options is the fastest method:
• If v = 80: t₁ = 440/80 = 5.5 hrs. t₂ = 440/88 = 5 hrs.
• Difference = 5.5 - 5 = 0.5 hrs (30 mins).
• The condition is perfectly satisfied. Thus, the current speed is 80 km/hr. Option 3 is correct.
• Key Takeaway: For complex quadratic TSD problems, plugging the given options into the Time = Distance/Speed formula is faster than solving.