Rice crop is transplanted at spacing of 20 cm ×10cm by using 2 seedlings per hill. Calculate the plant population in 2000m2 area.
Buses start from a bus terminal with a speed of 20 km/hr at intervals of 12 minutes. What is the speed of a boy coming from the opposite direction towar...
A thief steal a car at 2:30 pm and drive at a speed of 80 km/hr. Police came to know about thief at 3:30 pm and start chasing him with the speed of 90 k...
Train P starts from Lucknow to Dehradun at 11:55 am with an average speed of 25.5 m/s. Train Q starts from Dehradunto Lucknowat 1:35 pm with an average ...
Ratio of speeds of ‘A’ and ‘B’ is 4:9, respectively. If they participate in a 270-metre race and ‘B’ gives ‘A’, a head start of ‘m’ ...
A driver of an army truck sees an ambulance 80 meters ahead of him. After 10 seconds the ambulance is 70m behind. If the speed of the truck is 104kmph, ...
Anju's journey comprises three segments. He travels the first 'd - 30' km at a speed of 12 km/h, the next 'd' km at a speed of 30 km/h, and finally, she...
In an examination, the average marks obtained by the students is 75. After correcting the quantitative mistakes, the average of 100 students is reduced ...
In covering a distance of 30 km, Abhay takes 2 hours more than Sameer. If Abhay doubles his speed, then he would take 1 hour less than Sameer. Abhay's s...
If a person walks 40% more than of his usual speed, reaches his distance 90 minutes before. If the destination is 441 km away, then the usual speed of a...
The speed of the cycle changes with the change in speed of wind. Time taken by cycle to travel 20 km., is 2 hours when wind is in the direction of the c...
