Speed, Time& Distance : Speed, Time& Distance
Ques.1: Speed = 60 kmphDistance = 300 km Time = ? : Ques.1: Speed = 60 kmphDistance = 300 km Time = ?
Slide 3 : Answer is 5 hrs.
Ques.2:Ram goes to Delhi, Half the distance he travels at 40 kmph & the other half at 60 kmph. What is his average speed for the whole journey? : Ques.2:Ram goes to Delhi, Half the distance he travels at 40 kmph & the other half at 60 kmph. What is his average speed for the whole journey?
Slide 5 : Answer
is 48 kmph.
Ques.3: Chandu covers 1200, 1000 and 800 km in 6, 5 and 4 hrs respectively. What is his average speed for the entire trip ? : Ques.3: Chandu covers 1200, 1000 and 800 km in 6, 5 and 4 hrs respectively. What is his average speed for the entire trip ?
Slide 7 : Answer
is 200 kmph.
Ques.4: How much time will a 360 metres long train running @ 108 kmph, take to cross a standing electricity pole? : Ques.4: How much time will a 360 metres long train running @ 108 kmph, take to cross a standing electricity pole?
Slide 9 : Answer : 12 seconds.
Ques.5: A 600 metres long train running @ 80 kmph will take how much time to cross a man sitting in another train, which is 400 metres long is running @ 64 kmph in the opposite direction? : Ques.5: A 600 metres long train running @ 80 kmph will take how much time to cross a man sitting in another train, which is 400 metres long is running @ 64 kmph in the opposite direction?
Slide 11 : Answer :
15 seconds.
Ques.6: A man travels 360 km in 4 hr, partly by air & partly by train. Had he traveled all the way by air, he’ll save 4/5 of the time he was in the train & would have arrived 2 hrs early. Find the distance he traveled by air & train. : Ques.6: A man travels 360 km in 4 hr, partly by air & partly by train. Had he traveled all the way by air, he’ll save 4/5 of the time he was in the train & would have arrived 2 hrs early. Find the distance he traveled by air & train.
Slide 13 : Air : 270 km, Train : 90 km
Ques.7: Two trains start at the same time from Pune & Delhi & proceed toward each other @ 80 km & 95 km/hr resp. When they meet, it is found that one train has traveled 180 km more than the other. Find distance b/w Delhi & Pune. : Ques.7: Two trains start at the same time from Pune & Delhi & proceed toward each other @ 80 km & 95 km/hr resp. When they meet, it is found that one train has traveled 180 km more than the other. Find distance b/w Delhi & Pune.
Slide 15 : Answer : 2100 km.
Ques.8: A train after traveling 50 km meets with an accident and then proceeds at ¾ of its former speed & arrives at its destination 35 min late. Had the accident occurred 24 km further, it would have reached only 25 min late. Find the speed of the train. : Ques.8: A train after traveling 50 km meets with an accident and then proceeds at ¾ of its former speed & arrives at its destination 35 min late. Had the accident occurred 24 km further, it would have reached only 25 min late. Find the speed of the train.
Slide 17 : Answer : 48 kmph.
Ques.9:The dis. between two places A and B is 570 km. A train starts from A @ 50 kmph at 6 a.m. & another starts from B @ 80 kmph at 7 a.m. towards each other. At what time will they meet? : Ques.9:The dis. between two places A and B is 570 km. A train starts from A @ 50 kmph at 6 a.m. & another starts from B @ 80 kmph at 7 a.m. towards each other. At what time will they meet?
Slide 19 : Answer
is 11 a.m.
Ques.10 : Anupam can row 5 kms against the stream in 15 minutes & return in 10 minutes. Find the speed of boat in still water & speed of water. : Ques.10 : Anupam can row 5 kms against the stream in 15 minutes & return in 10 minutes. Find the speed of boat in still water & speed of water. Speed of Boat = 25 kmph Speed of Water = 5 kmph
Slide 21 : Answer
is 2 kmph.
Ques.11 : A man can row to a place which is 80 kms distant & back in 9 hrs. He realizes that he can row 5 kms with the stream in the same time as 4 kms against the stream. Find the rate of current. : Ques.11 : A man can row to a place which is 80 kms distant & back in 9 hrs. He realizes that he can row 5 kms with the stream in the same time as 4 kms against the stream. Find the rate of current.
Slide 23 : Answer
is 2 kmph.
Ques.12: Radheysham can travel @ 12 kmph in still water. He traveled 119 kms downstream in a river & then returned, taking altogether 24 hours. Find the rate of flow of water. : Ques.12: Radheysham can travel @ 12 kmph in still water. He traveled 119 kms downstream in a river & then returned, taking altogether 24 hours. Find the rate of flow of water.
Slide 25 : Answer
is 5 kmph.
Ques.13 : A man covers 33 km upstream and 84 km downstream in 7 hrs. He also covers 55 km upstream and 63 km downstream in 8 hrs. Find the speed of boat in still water & speed of water. (CAT) : Ques.13 : A man covers 33 km upstream and 84 km downstream in 7 hrs. He also covers 55 km upstream and 63 km downstream in 8 hrs. Find the speed of boat in still water & speed of water. (CAT)
Slide 27 : Boat = 16 kmph
Water = 5 kmph