time and distance Model Questions & Answers, Practice Test for ssc chsl tier 1 2023

Question :11

A car covers a distance of 816 kms in 12 hours. What is the speed of the car ?

Answer: (e)

Speed of the car = $\text"Distance Covered"/\text"TimeTaken"$

= $816/12$ = 68 kmph.

Question :12

A long distance runner runs 9 laps of a 400 meters track everyday. His timings (in minutes) for four consecutive days are 88, 96, 89 and 87 resplectively. On an average, how many meters/minute does the runner cover ?

Answer: (c)

Average speed =$\text"Total distance"/\text"Total time"$

=${400×4×9}/{88+96+89+87}={400×4×9}/360$

= 40 metres /minutes

Question :13

A man walked at a speed of 4 km/hr from point A to B and came back from point B to A at the speed of 6 km/hr. What would be the ratio of the time taken by the main in walking from point A to B that from point B to A?

Answer: (e)

Question :14

A car complete a journey in 10 hours. He travels first half of the journey at the rate of 21 km/hr and second half at the rate of 24 km/ hr. The total journey in km is

Answer: (c)

Distance = Average speed × time

= ${2×21×24}/{21+24}×10$

=${2×21×24}/45×10$=224 km

Question :15

In a 800 m race around a stadium having the circumference of 200 m, the top runner meets the last runner on the 5th minute of the race. If the top runner runs at twice the speed of the last runner, what is the time taken by the top runner to finish the race ?

Answer: (b)

After 5 minutes (before meeting), the top runner covers 2 rounds i.e., 400 m and the last runner covers 1 round i.e., 200 m.

∴Top runner covers 800 m race in 10 minutes.

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