Important Questions with Short Tricks focusing on Maths section related to the exam. To make the chapter easy for you all, we are providing you all some Short Tricks to solve the questions in Quant Section. We hope you will like it. Feel free to share your feedback with us in the comment section.
Most Important Questions with Short Tricks on Time, Speed and Distance For SSC Exams
Question 1: A train running at 25 km/hr takes 18 seconds to pass a platform. Next, it takes 12 seconds to pass a man walking at 5 km/hr in the opposite direction. Find the sum of the length of the train and that of the platform.
(1) 125 m
(2) 135 m
(3) 145 m
(4) 155 m
Speed of train = 25 km./hr.
Distance travelled in 18 secs at this speed
Where D = L . train + L . platform
length of train + length of platform = 125 m.
Question 2: Two trains for Delhi leave Jaipur at 8.30 a.m. and 9.00 a.m. and travel at 60 km/hr and 75 km/hr respectively. How many km. away from Delhi will the two trains meet.
(1) 125 km
(2) 150 km
(3) 175 km
(4) 200 km
Distance covered by 1st train in 30 min. = 30 kms. (as speed per hrs. 60)
Time taken by 2nd train to cover 30 kms. = 2 hrs. (as it travels 15 km. per hr. more than 1st train. Hence takes 2 hrs. to cover 30 km. that 1st train has already covered)
Dist. covered = (60 x 2.5 hr.) or (75 x 2 hrs.) = 150 km.
Question 3: Two places P and Q are 162 km apart. A train leaves P for Q and at the same time another train leaves Q for P. Both the trains meet 6 hrs after they start moving. If the train travelling from P to Q travels 8 km/hr faster than the other train, find the speed of the two trains.
(1) 17.5 km/hr, 9.5 km/hr
(2) 19.5 km/hr, 11.5 km/hr
(3) 21.5 km/hr, 13.5 km/hr
(4) Can’t be determined
Suppose the speeds of the two trains are p km/hr and q km/hr respectively. Thus
and p – q = 8 …… (ii)
(i) + (ii) implies that
2p = 35 p = 17.5 km/hr
and (i) – (ii) implies that
2q = 19 q = 9.5 km/hr
(x) + (x + 8) = 27 (as given diff. in speed = 8 kms./hr.)
9.5 & 17.5
Question 4: A train running at a speed of 60 kmph crosses a platform double its length in 32.4 seconds. What is the length of the platform?
(1) 180 metres
(2) 240 metres
(3) 360 metres
(4) 90 metres
Let the length of the train be x m
length of the platform = 2x m
Total distance covered by the train = (2x + x =) 3x m
Now, according to the question
Question 5: A train travels at the speed of 65 kms/hr and halts at 8 junctions for a certain time. It covers a distance of 1300 kms in 1 day (24 hours). How long does the train stop at each junction, if it halts for the same period of time at all the junctions?
(1) 30 minutes
(2) 20 minutes
(3) 60 minutes
(4) 40 minutes
Speed = 65 kmph
Distance = 1300 kms
Clearly, 4 hours are spent at 8 junctions in stoppages as one full day was taken for the journey to be completed.
Time to cover 1300 km=D/S = 1300/65= 20 hrs
Break = 24 hrs. – 20 hrs. = 4 hrs.