1. The average age of 36 students in a group is 14 years. When teacher’s age is included to it, the average increases by one. Find out the teacher’s age in years? 1. 51 years 2. 49 years 3. 53 years 4. 50 years [expand title=”Answer & Explanation”] Answer:- 1 Explanation :- Age of the […]
1. A batsman makes a score of 87 runs in the 17th inning and thus increases his averages by 3. What is his average after 17th inning? 1. 39 2. 35 3. 42 4. 40.5 [expand title=”Answer & Explanation”] Answer:- 1 Explanation :- Let the average after 17th innings = x Therefore. average after 16th
1. The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, what is the weight of B? 1. 31 kg 2. 2812 kg 3. 32 kg 4. 3012 kg [expand title=”Answer & Explanation”] Answer:-
1. A car owner buys diesel at Rs.7.50, Rs. 8 and Rs. 8.50 per litre for three successive years. What approximately is the average cost per litre of diesel if he spends Rs. 4000 each year? 1. Rs. 8 2. Rs. 7.98 3. Rs. 6.2 4. Rs. 8.1 [expand title=”Answer & Explanation”] Answer:- 2 Explanation
1. The average age of a class of 22 students is 21 years. The average increased by 1 when the teacher’s age also included. What is the age of the teacher? 1. 48 2. 45 3. 43 4. 44 [expand title=”Answer & Explanation”] Answer:- 4 Explanation :- Average age of 22 students = 21 years
1. The average age of 40 boys in a class is 15. The average age of a group of 18 boys in the class is 16 and the average age of another12 boys in the class is 14. What is the average age of the remaining boys in the class?1.15.25 years 2. 14.4 years 3.
1. Busses start from a bus terminal with a speed of 20 km/hr at intervals of 10 minutes. What is the speed of a man coming from the opposite direction towards the bus terminal if he meets the buses at intervals of 8 minutes? 1. 3 km/hr 2. 4 km/hr 3. 5 km/hr 4. 7
1. A man walking at the rate of 5 km/hr crosses a bridge in 15 minutes. What is the length of the bridge (in metres)? 1. 1250 2. 1280 3. 1320 4. 1340 [expand title=”Answer & Explanation”] Answer:- 1 Explanation :- Speed = 5 km/h = 5 *(5/18) m/s = 25/18 m/s Time = 15
1. The speed of a bus increases by 2 km after every one hour. If the distance travelling in the first one hour was 35 km. what was the total distance travelled in 12 hours? 1. 422 km 2. 552 km 3. 502 km 4. 492 km [expand title=”Answer & Explanation”] Answer:- 2 Explanation :-
1. If a person walks at 14 km/hr instead of 10 km/hr, he would have walked 20 km more. What is the actual distance travelled by him? 1. 80 km 2. 70 km 3. 60 km 4. 50 km [expand title=”Answer & Explanation”] Answer:- 4 Explanation :- Let the distance covered with speed 10km =
1. A man goes to his office from his house at a speed of 3 km/hr and returns at a speed of 2 km/hr. If he takes 5 hours in going and coming, what is the distance between his house and office? 1. 3 km 2. 4 km 3. 5 km 4. 6 km [expand
1. A and B walk around a circular track. A and B walk at a speed of 2 rounds per hour and 3 rounds per hour respectively. If they start at 8 a.m. from the same point in opposite directions, how many times shall they cross each other before 9.30 a.m.? 1. 5 2. 6
1. A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour? 1. 8.2 2. 4.2 3. 6.1 4. 7.2 [expand title=”Answer & Explanation”] Answer:- 4 Explanation :- Distance = 600 m = 600/1000 = 6/10 km Time = 5 minutes = 5/60 = 1/12 Speed =
1. A person travels from A to B at a speed of 40 km/hr and returns by increasing his speed by 50%. What is his average speed for both the trips? 1. 60 km/hr 2. 56 km/hr 3. 52 km/hr 4. 48 km/hr [expand title=”Answer & Explanation”] Answer:- 4 Explanation :- Speed from A to
1. A train leaves Delhi at 6 a.m and reaches chandigarh at 10 a.m. Another train leaves chandigarh at 8 a.m and reaches Delhi at 11.30 a.m. At what time do the two trains cross one another ? 1. 9.26 a.m 2. 9 a.m 3. 8.36 a.m 4. 8.56 a.m 5. 9.56 a.m [expand title=”Answer