If the cost of the book worth 50 is increased by 25, the rate of increase is
25%
20%
50%
10%
A cistern can be filled separately by two pipes in 12 and 16 minutes separately. If both fill pipes are opened together, when will the cistern be filled ?
A father said to his son, "I was as old as you are at present at the time of your birth." If the father's age is 38 years now, the son's age five years black was:
14 years
19 years
33 years
38 years
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
In a quiz program the ratio of correct answers to incorrect answers is 5 : 2. If 16 incorrect answers are given then the number of correct answers given is
80
40
20
30
8% of is equal to
50
75
100
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%
None of these
A man rows to a place 48 km distant and back in 14 hours. He find that he can row 4 km with the stream in the same time as 3 km against the stream. Find the rate of stream.
1 km/h
1.5 km/h
2 km/h
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
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
