A person has to cover a distance of 6 km in 45 minutes. If he covers one-half of the distance in two-thirds of the total time; to cover the remaining distance in the remaining time, his speed (in km/h) must be :
6
8
12
15
Two bicyclists do the same journey by travelling respectively at the rate of 9 km an hour. The distance travelled when one taken 32 minutes longer than the other is
42 km
44 km
48 km
50 km
Two pipes A and B can fill a tank in 15 hours and 20 hours respectively while a third pipe C can empty the full tank in 25 hours. All the three pipes are opened in the beginning. After 10 hours, C is closed. In how much time, will the tank be full ?
12 hrs
13 hrs
16 hrs
18 hrs
A cycle is sold for 880 at a loss of 20%. For how much should it be sold to gain 10% ?
1400
1210
1100
1000
The average age of A and B is 20 years. If C were to replace A, the average would be 19 and if C were to replace B, the average would be 21. What are the age of A, B and C ?
22, 18, 20
20, 20, 18
18, 22, 20
None of these
A shopkeeper sold two watches for 425 each, gaining 10% on one and losing 10% on the other. Then he
neither gains nor loss
gains 1%
loses 1%
In a flight of 600 km, an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced by 200 km/hr and the time of flight increased by 30 minutes. The duration of the flight is :
1 hours
2 hours
3 hours
4 hours
If A's salary is 50% more than B's then by what % B's salary is less than A's salary ?
33
30
The rowing speed of man in still water is 20 km/h. Going downstream, he moves at the rate of 35 km/h. The rate of stream is
45 km/h
2.5 km/h
5 km/h
10 km/h
Two numbers are such that if the first be added to 5 times the second, their sum becomes 52, and if the second be added to 8 times the first, their sum becomes 65. The two numbers are:
9,7
3,7
7,9
7,3
