1 Angle between hands at 8:30 ?
2. A watch gains 5 seconds in 5 minutes and was set right at 10 AM. What time will it show at 8 PM on the same day?
3. A watch loses 1 minutes every hour and was set right at 9 AM on a Monday. When will it show the correct time again?
4. What is the day on 23 October 2014 ?
5. A man can row a distance 50 km upstream in 5 hrs. If he rows the same distance down the stream in 3 hrs. then speed of man ?
6. A man can row in still water at 4 km/h. In a stream flowing at 2 km/h, if it takes 3 hours more in upstream than to go downstream for the same distance, then the distance swims by person ?
7. A tank can be filled by a tap in 20 minutes and by another tap in 60 minutes. Both the taps are kept open for 10 minutes and then the first tap is shut off. After this, how much time required to fill tank will be completely ?
8. What is the time taken by the two trains to meet from first train side, that start at their points: A for the first train and B for the second train that travels at a speed of ‘4’ km/hr and ‘9’ km/hr respectively.The distance between A and B is 13 km?
9. A train crosses by a stationary man standing on the platform in 7 seconds and passes by the platform completely in 28 seconds. If the length of the platform is 330 meters, what is the length of the train?
10. A motorcar does a journey in 10 hrs, the first half at 21 kmph and the second half at 24 kmph. Find the distance?
11. A train travelling 25 kmph leaves Delhi at 9 a.m. and another train travelling 35 kmph starts at 2 p.m. in the same direction. How many km from away from starting point they will meet together ?
12. A person travelled a distance with 5 km/hr then, he will take 2 hrs more.if he travels with 7.5 km/hr then,he will reach 2 hrs earlier.the distance traveled by person ?
2. A watch gains 5 seconds in 5 minutes and was set right at 10 AM. What time will it show at 8 PM on the same day?
3. A watch loses 1 minutes every hour and was set right at 9 AM on a Monday. When will it show the correct time again?
4. What is the day on 23 October 2014 ?
5. A man can row a distance 50 km upstream in 5 hrs. If he rows the same distance down the stream in 3 hrs. then speed of man ?
6. A man can row in still water at 4 km/h. In a stream flowing at 2 km/h, if it takes 3 hours more in upstream than to go downstream for the same distance, then the distance swims by person ?
7. A tank can be filled by a tap in 20 minutes and by another tap in 60 minutes. Both the taps are kept open for 10 minutes and then the first tap is shut off. After this, how much time required to fill tank will be completely ?
8. What is the time taken by the two trains to meet from first train side, that start at their points: A for the first train and B for the second train that travels at a speed of ‘4’ km/hr and ‘9’ km/hr respectively.The distance between A and B is 13 km?
9. A train crosses by a stationary man standing on the platform in 7 seconds and passes by the platform completely in 28 seconds. If the length of the platform is 330 meters, what is the length of the train?
10. A motorcar does a journey in 10 hrs, the first half at 21 kmph and the second half at 24 kmph. Find the distance?
11. A train travelling 25 kmph leaves Delhi at 9 a.m. and another train travelling 35 kmph starts at 2 p.m. in the same direction. How many km from away from starting point they will meet together ?
12. A person travelled a distance with 5 km/hr then, he will take 2 hrs more.if he travels with 7.5 km/hr then,he will reach 2 hrs earlier.the distance traveled by person ?
1. 60 degrees
ReplyDeleteAnswer is 75 degrees.
DeleteTo calculate angle between hour and minute hand
[(hr*30)-(minute*11/2)]
Yes,This is the correct way to calculate angle between Hour and Minute hand
Delete5. 100/30 km/hr
ReplyDeleteAnswer is 80/3 km/hr
Delete7. 20 min
ReplyDelete6. 9KM
ReplyDelete10. 224 KM
ReplyDelete9. 110M
ReplyDelete2. 08:10 PM
ReplyDelete3. After 30 days
ReplyDelete12. 10 km
ReplyDelete8. 4 KM
ReplyDelete11. 437.5 KM
ReplyDelete1. (8*30)-(30*11/2)= 240-165
ReplyDelete=75 degrees
2. In one hour one minute is gaining.
ReplyDeleteSo,10AM to 8PM time difference is 10 hours
Therefore,In 10 hours it gains 10 min.
At 8pm it will show 8:10
3. To show right time it has loose 12 hours.
ReplyDeletein one hour it is loosing 1 minute.
Generally,1 m ----> 1 hr
720m-------> ?
720 hrs means 30 days after it will show correct time
5. Upstream :
ReplyDeleteDistance=(x+y)*(time).
X---->man speed
Y------> stream speed
So,50/5=10=(x+y)-----1
Similarly,Downstream
D=(x+y)*time
50/3=(x-y)-------2
From 1 & 2
Speed=(80/3)km/hr
6. (D/2)-(D/6)=3
ReplyDelete---> (2*D)=3*6
----->D=9 km
7.(1/20)+(1/60)=(4/60)
ReplyDelete---->15 days.
Both worked for 10 days.so,remaining work in fraction
1/3.
B tap can fill in 20 days
8. (13*4)/(9+4)=4km from A train side starting point
ReplyDelete