Khalil drove $120$ kilometers in a certain amount of time. What was his average speed, in kilometers per hour, during

Khalil drove $120$ kilometers in a certain amount of time. What was his average speed, in kilometers per hour, during this time?

(1) If Khalil had driven at an average speed that was $5$ kilometers per hour faster, his driving time would have been reduced by $20$ minutes.
(2) If Khalil had driven at an average speed that was $25\%$ faster, his driving time would have been reduced by $20\%.$

Answer: A

Source: Official Guide

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