Question
Mean of a grouped data calculated using direct method,
assumed mean method or step deviation method:Solution
A man covered a distance of 240 km in 4 hours on a bike. How much distance will he cover on a bicycle in 8 hours if he rides the bicycle at one-tenth th...
A boy goes to school with a speed of 45 km/h and comes back with a speed of 30 km/h. find his average speed?
Find the distance travelled (in km) by the truck to reach point B from point A, if a car cover 45% the same distance in 2 hours 42 minutes and a truck c...
Bike X travels 180 km in t hours and bike Y travels 90 km in (t/2) hours. If bike X covers 150 km in 2.5 hours, then how many kilometres will bike Y tra...
Amit travels the first 20% of his journey at a constant speed of 40 km/h and covers the remaining 320 km at a constant speed of 32 km/h. What is his ave...
When the bus moves at 3/4 of its usual speed, it is 20 minutes late. What is its usual time to cover the journey?Â
Ravi appointed 24 workers to finish a job in 18 days. After 9 days, he saw that only 1/3 of the job was completed. If 'n' is the number of additional wo...
- A delivery boy travels a certain distance from his warehouse to the customer’s house. At a speed of 15 km/h, he arrives 18 minutes late. But when riding ...
Sneha travels from village ‘K’ to village ‘L’. If she cycles at 36 km/h, she reaches 20 minutes early. If she cycles at 24 km/h, she reaches 40 ...
A bus of length 150 meters can cross a signal post in 6 seconds. A second bus traveling at three times the speed of the first bus can cross a car travel...
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