A car covers a distance of 180 km at 45 km/h and another 180 km at 60 km/h. Find the total time spent during the journey. MCQ with Answer and Explanation
A field clerk walking at 5 km/h handles a regular sector. If he steps up to run at 10 km/h, he takes 24 minutes less across the course stretch. Find the absolute distance profile.
A sonar signal takes 6 seconds to travel down to an underwater reef and reflect back to the vessel. If the speed of sound in water is 1500 m/s, find the depth of the reef in kilometers.
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