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
If the cost of the book worth 50 is increased by 25, the rate of increase is
25%
20%
50%
10%
At what rate of interest per annum will a sum double itself in 8 years, if calculated as per Simple Interest formula.
None of these
Asha can stitch 'x' shirts in minutes. At this rate, how many shirts can she stitch in of an hour ?
50 x
60 x
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
The average age of a group of person going for picnic is 16 years. Twenty new persons with an average age of 15 years join the group on the spot due to which their average becomes 15.5 years. Find the number of persons initially going for picnic.
18
22
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%
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 tank is filled in 5 hours by three pipes A, B, and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank ?
20 hrs
25 hrs
35 hrs
Cannot be determined
