ഒരു കുട്ടി 10 സംഖ്യകളുടെ ശരാശരി കണ്ടപ്പോൾ 53 എന്ന സംഖ്യക്ക് പകരം 35 എന്നാണ് എഴുതിയത്. കുട്ടിക്ക് കിട്ടിയ ശരാശരി 36.5 ആണെങ്കിൽ യഥാർത്ഥ ശരാശരി എന്ത് ?
240 മീറ്റർ നീളമുള്ള ഒരു തീവണ്ടിക്ക് പാതവക്കിൽ നിൽക്കുന്ന ഒരു വ്യക്ഷത്തകടന്നുപോകുന്നതിന് 8 സെക്കന്റ് വേണം. എങ്കിൽ 600 മീറ്റർ നീളമുള്ള ഒരു ഫ്ലാറ്റ്ഫോം കടക്കാൻ ആ തീവണ്ടി എത്ര സമയമെടുക്കും?
X ജോലിക്കാർക്ക് ഒരു ജോലി ചെയ്ത് തീർക്കാൻ 16 ദിവസം വേണം. എങ്കിൽ 2X ജോലിക്കാർക്ക് അതിന്റെ പകുതി ജോലി ചെയ്തു തീർക്കാൻ ആവശ്യമായ ദിവസം കണക്കാക്കുക.
A and B start at the same time for the same place from the same point with speeds of 50 km/hr and 60 km/hr respectively. If in covering the journey, A takes 4 hours longer than B, the total distance of the journey is
A Boat covers 12 km in 1 h in still water. It takes four times the time in covering the same distance against the current. What is the speed of the current?
A man rides his bicycle 10 km at an average speed of 12 km/hr and again travels 12 km at an average speed of 10 km/hr. What is his average speed for the entire trip?
Two trains running in opposite directions cross a pole in 43 seconds and 27 seconds respectively and cross each other in 37 seconds. What is the ratio of their speeds?
A man covers three equal distances first at the rate of 10 km/hr, second at the rate of 20 km/hr, and third at the rate of 30 km/hr. If he covers the third part of the journey in 2 hours. Find the average speed of the whole journey.
A certain distance is covered at a certain speed. If one-third of the distance is covered in thrice time, what is the ratio of two speeds?
A train travelling at a speed of 63 km/hr crosses a 400 m long platform in 42 seconds. Find the length of the train
A boat covers 36 km upstream in 2 hours and 66 km downstream in 3 hours. Find the speed of the boat in still water.
A train 180 m long crosses a milestone in 12 seconds and crosses the other train of the same length travelling in the opposite direction in 15 seconds. Find the speed of the other train.
A train crosses a bridge which is 120 m long in 14 seconds and the same train crosses a static pole in 8 seconds. Find the length and the speed of the train.
The speed of boat in downstream is 16 km/hr and upstream is 10 km/hr. Find the speed of boat in still water?
ഒരു ഗ്രൂപ്പിൽ 400 ആളുകൾ ഉണ്ട്. അതിൽ 250 പേർ ഹിന്ദി സംസാരിയ്ക്കും. 200 പേർ ഇംഗ്ലീഷ് സംസാരിക്കും, എത്രപേർക്ക് രണ്ട് ഭാഷയും സംസാരിക്കാൻ കഴിയും ?
Two cars travel from city A to city B at a speed of 42 and 60 km/hr respectively. If one car takes 2 hours lesser time than the other car for the journey, then the distance between City A and City B is?
Two cars A and B travel from one city to another, at speeds of 72 km/hr and 90 km/hr respectively. If car B takes 1 hour lesser than car A for the journey, then what is the distance (in km) between the two cities?
Excluding stoppages, the speed of a bus is 80 kmph and including stoppages, it is 60 kmph. For how many minutes does the bus stop per hour?
A man completes his journey in 8 hours. He covers half the distance at 40 kmph and the rest at 60 kmph. The length of the journey is?
Two trains, X and Y, travel from A to B at average speeds of 80 km/hr and 90 km/hr respectively. If X takes an hour more than Y for the journey, then the distance between A and B is _____.
A car completes a journey in seven hours. It covered half of the distance at 40 kmph and the remaining half at 60 kmph speed. Then, the distance (in km) covered is:
A train having a length of 500 m passes through a tunnel of 1000 m in 1 minute. What is the speed of the train in Km/hr?
Find the average speed of train if it covers first half of the distance at 3 kmph and second half of the distance at 6 kmph.
A 1200 m long train crosses a tree in 120 sec, how much time will it take to pass a platform 700 m long?
Running at a speed of 60 km per hour, a train passed through a 1.5 km long tunnel in two minutes, What is the length of the train ?
A cyclist, after cycling a distance of 70 km on the second day, finds that the ratio of distances covered by him on the first two days is 4 : 5. If he travels a distance of 42 km. on the third day, then the ratio of distances travelled on the third day and the first day is:
A car covers a certain distance in 25 hours. If it reduces the speed by 1/5th, the car covers 200 km less in the same time period. The original speed of the car is how much?
To cover a distance of 81 km in 1.5 hours what should be the average speed of the car in meters/second?
In a school 40% of the students play football and 50% play cricket. If 18% of the students neither play football nor cricket, the percentage of the students playing both is :
The average age of 20 boys in a class is 12 years. 5 new boys are admitted to the class whose average age is 7 years. The average age of the boys in the class becomes
The average age of 40 students of a class is 18 years. When 20 new students are admitted to the same class, the average age of the students of the class is increased by 6 months. The average age of newly admitted students is