A car takes half of the time taken by truck to go from Lucknow to Bombay. A truck takes 20 hour to go for the same distance . What is the speed of truck if the speed of car is 120 km per hour ?
The distance of the college and the home of Rajeev is 80 kilometre . One day he was late by 1 hour then the normal time to leave for the college, so he increased his speed by 4 kilometre/hour and thus he reached to college at the normal time . What is the changed speed of Rajeev ?
Shweta when increases her speed from 24 kilometre/hour to 30 kilometre/hour . She takes 1 hour less than the usual time to cover a certain distance. What is the distance usually covered by Shweta ?
Kriplani goes to school at 20 km/hour and reaches the school late by 4 minutes. Next morning he goes at 25 kilometre/hour and reaches the school earlier by 2 minutes. What is the distance upyog school ?
Arjun and Bhishma are running on a circular track of 600 metre . Speed of Arjun is 30 metre/second and that of Bhishma is 20 metre/second . They start from the same point at the same time in the same direction . When will they meet again for the first time ?
Option's are:
Selection Type : Single Selection
Option 1
Incorrect
30 sec
Option 2
Correct
60
Option 3
Incorrect
Cannot be determined
Option 4
Incorrect
None of these
Answer
Ans.
Ans is 60 sec wrongly entered 10. Write 60 sec in second method
Arjun and Bhishma are running on a circular track of length 600 in the opposite direction . Seed of Arjun is 30 metre/second and that of Bhishma is 20m/sec. What is the time taken by them to meet again for the first time ?