In a classroom there are 13 boys and 11 girls. Average age of each boy and each girl is 23 years and 17 years respectively. The sum of ages of all the boys, girls and a teacher whose age is ‘x’ years is 540 years. Find the value of ‘x’.
Sum of ages of all boys = 13 x 23 = 299 Sum of ages of all girls = 11 x 17 = 187 So, 299 + 187 + x = 540 => x = 54
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...
A person crosses a 1800 m long street in 5 min. What is his speed (in km/h)?
A carriage travels in the fog passed along a man who was walking @ 3kmph in the same direction. He could see the carriage for 4 minutes and it was visib...
A was travelling from point X to point Y. He increased his speed by 14 km/h after every hour. He reached his destination in 18 hours. If his initial spe...
Two trains X and Y whose length are in ratio of 5:8 and time taken to cross a man standing on a platform is 5:2. If the speed of the train X is 24 km/h ...
Train P starts from Lucknow to Dehradun at 11:55 am with an average speed of 45 m/s. Train Q starts from Dehradunto Lucknowat 1:35 pm with an average sp...
Aman has to travel a distance of 240 km. He travels the first 25% of the distance at a speed of 50 kmph, the next two-fifths at a speed of 48 kmph, and ...
In a 1500 m race, Anil beats Bakul by 150 m and in the same race Bakul beats Charles by 75 m. By what distance does Anil beat Charles?
Two person A and B from same distance with speed time and same direction with speed of 48km/hr and 40km/hr .The speed of person B increased by ½ ...
Ratio of speeds of ‘A’ and ‘B’ is 11:13, respectively. If they participate in a 130-metre race and ‘B’ gives ‘A’, a head start of ‘mâ€...
