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TSD Practice problem part - 1
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TSD Practice problem part - 1

Bharat Gupta is teaching live on Unacademy Plus

Bharat Gupta
Engineer by degree Mathematician by Heart. Having 22 years of teaching experience. Visit my youtube channel BHARAT GUPTA-RADIX .

U
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thank you sir ....aagrhichirunna clss
Hi Sir, How did you take Reshma and Anjali, when they first time.. they would hv covered 600m. Can you please explain the above part...? Thank you
why m-1 should be a factor of 20-5?
sir I couldn't understand the last question that why m-1 should be a factor of 20-5
NC
why m-1 = 15
1. TIME, SPEED AND DISTANCE Practice Questions-1

2. Two men Jack and Jill starts from two ends of aA and B start swimming simultaneously to and fro road PQ. Both start running towards each other atfrom shallow end and runs to deep end for a 1 km the same time. Jack covered part of PQ at arace. The length of swimming pool is 100 m and speed of 20 km/hr and remaining distance at speedrespective speed of A and B are 30 m/minute and of 30 km/hr, to reach Q. Jill ran at a spee by the time Jack run from P to Q, Jill ran from Q to Second time P and went back to Q. Both reached at Q at thea same time. Find a in km/hr. a. 40 d of a and 70 m/minute. Where will A and B meet for the 40 m from shallow end b. 25 m from shallow end c, 40 m from deep end d. 25 m from deep end b. 60 c. 50 d. 45 Rachna and Anjali start running simultaneously Two boys start simultaneously at the same point on from the diametrically opposite ends of a circularthe circular track and run along the track in the track towards each other at the speed of 9 km/hr same direction. The point on the track at which they and 18 km/hr respectively. After every 5 minutes meet for 5th time is same as that at which they meet their speed reduces to of their current speed. If for the 20th time. If the ratio of speed of faster to the length of the circular track is 1.2 km, how many times will they meet? a. 3 b. 4 c. 5 d. They meet for infinite time 3 slower is m 1, where m is a natural number, which of the following is not a possible value of m? a. 4 b. 5 c. 6 d. Data insufficient

3. Two men Jack and Jill starts from two ends of a road PQ. Both start running towards each other at the same time. Jack covered part of PQ at a speed of 20 km/hr and remaining distance at speed of 30 km/hr, to reach Q. Jill ran at a speed of a and by the time Jack run from P to Q, Jill ran from Q to P and went back to Q. Both reached at Q at the same time. Find a in km/hr. a.40 b, 60 c. 50 d. 45

4. Two men Jack and Jill starts from two ends of a road PQ. Both start running towards each other at the same time. Jack covered part of PQ at a speed of 20 km/hr and remaining distance at speed of 30 km/hr, to reach Q. Jill ran at a speed of a and by the time Jack run from P to Q, Jill ran from Q to P and went back to Q. Both reached at Q at the same time. Find a in km/hr. a.40 b, 60 c. 50 d. 45 JaL 2 30 2 2. 30

5. Rachna and Anjali start running simultaneously from the diametrically opposite ends of a circular track towards each other at the speed of 9 km/hr and 18 km/hr respectively. After every 5 minutes their speed reduces to of their current speed. If the length of the circular track is 1.2 km, how many times will they meet? 3 . 3 b. 4 C. 5 d. They meet for infinite time

6. Rachna and Anjali start running simultaneously from the diametrically opposite ends of a circular track towards each other at the speed of 9 km/hr and 18 km/hr respectively. After every 5 minutes their speed reduces to of their current speed. If the length of the circular track is 1.2 km, how many times will they meet? a. 3 b. 4 c. 5 d. They meet for infinite time 3 6o a 6D Ta 12 02 118 10

7. Rachna and Anjali start running simultaneously from the diametrically opposite ends of a circular track towards each other at the speed of 9 km/hr and 18 km/hr respectively. After every 5 minutes their speed reduces to of their current speed. If the length of the circular track is 1.2 km, how many times will they meet? a. 3 b. 4 c. 5 d. They meet for infinite time 2OD

8. A and B start swimming simultaneously to and fro from shallow end and runs to deep end for a 1 km race. The length of swimming pool is 100 m and respective speed of A and B are 30 m/minute and 70 m/minute. Where will A and B meet for the second time? a. 40 m from shallow end c.40 m from deep end b. 25 m from shallow end d. 25 m from deep end

9. A and B start swimming simultaneously to and fro from shallow end and runs to deep end for a 1 km race. The length of swimming pool is 100 m and respective speed of A and B are 30 m/minute and 70 m/minute. Where will A and B meet for the second time? a. 40 m from shallow end c.40 m from deep end b. 25 m from shallow end d. 25 m from deep end SE DE 20 30 120

10. Two boys start simultaneously at the same point on the circular track and run along the track in the same direction. The point on the track at which they meet for 5th time is same as that at which they meet for the 20th time. If the ratio of speed of faster to slower is m 1, where m is a natural number, which of the following is not a possible value of m? . 4 b. 5 c. 6 d. Data insufficient