ANSWERS 1) A car takes 90 minutes to reach the hospital. The odometer of the car shows that the car has covered a distance of 20 km. What is the speed of the car in km/hr . Time (t) = 90 minutes= 90/60 hours = 1.5 hours Distance ( d ) = 20 km To find out: Speed (s) =? Solution: total distance covered (d) speed = total time taken (t) Substituting the given values in the formula of speed, we get, d 20 s = = = 13.33 km/ h t 1.5 Therefore, the speed of car is 13.33 km/h. 2) Raju drove his car to go to his friend’s house at a speed of 10 km/h and this journey took him 3 hours. How far did he travel? Speed ( s ) = 10 km/h Time (t) = 3 hours To find out: Distance ( d ) =? Solution: As we know, total distance covered (d) speed = total time taken (t) Rearranging the above equation, we get d= s x t Substituting the given values in the above equation , we get, ...