By selling 75 toys a shopkeeper gains the selling price of 25 toys. Find his gain percent
20%
25%
50%
75%
The average of eight numbers is 14. The average of six of these numbers is 16.The average of the remaining two numbers is
4
8
16
none
In an examinations, a pupil’s average marks were 63 per paper. If he had obtained 20 more marks for his Geography paper and 2 more marks for his History paper, his average per paper would have been 65. How many papers were there in the examination?
9
10
11
12
David got two and a half times as many marks in English as in History. If his total marks in the two subjects are 140, the marks obtained by him in English are:
40
75
90
100
The average weight of 45 students in a class is 52 kg. Five of them whose average weight is 48 kg leave the class and other 5 students whose average weight is 54 kg join the class. What is the new average weight (in kg) of the class?
52 1/3
52 1/2
52 2/3
None of these
Of the four number, whose average is 60, the first is one-fourth of the sum of the last three. The first number is:
15
45
48
60.25
A shopkeeper sold sarees at Rs. 266 each after giving 5% discount on labeled price. Had he not given the discount, he would have earned a profit of 12% on the cost price. What was the cost price of each saree?
Rs. 240
Rs. 260
Rs. 280
Data inadequate
There are two examination rooms A and B. If 10 students are sent from A to B, then the number of students in each room is the same. If 20 candidates are sent from B to A, then the number of students in A is double the number of students in B. The number of students in room A is;
20
80
200
The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is:
35 years
40 years
45 years
50 years
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 averge wouldbe21. What are the age ofA, Band C?
22,18,20
20,20,18
18,22,20
21,20,19
None of the above
The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. What is the present age of the husband?
32
28
26
A trader marked the price of his commodity so as to include a profit of 25%. He allowed discount of 16% on the marked price. His actual profit was;
5%
9%
16%
Find the average of the following set of scores.746 1020 321 12 63 428 226 144
367.5
370
360
368.75
A man bought some oranges at Rs. 10 per dozen and bought the same number of oranges at Rs. 8 per dozen. He sold these oranges at Rs. 11 per dozen and gained Rs. 120. The total number oranges bought by him was:
30 dozens
40 dozens
50 dozens
60 dozens
The average height of 25 boys is 1.4 m. When 5 boys leave the group, then the average height increase by 0.15 m. What is the average height of the 5 boys who leave ?
0.8 m
0.9 m
0.95 m
1.05 m
The average weight of 16 boys in a class is 50.25 kg and that of the remaining 8 boys is 45.15 kg. Find the average weights of all the boys in the class
47.55 kg
48 kg
48.55 kg
49 kg
In an examination, a student's average marks were 63. If he had obtained 20 more marks for his Geography and 2 more marks for his history, his average would have been 65. How many subjects were there in the examination?
13
14
A car owner buys petrol 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 petrol if he spends Rs. 4000 each year?
Rs. 7.98
Rs. 8.08
Rs. 8.98
Rs. 9.08
The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?
0
1
19
The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is:
35.2
36.1
36.5
39.1
The average weight of 8 person's increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person?
75 Kgs
75.5 Kgs
85 Kgs
85.5 Kgs
Even after reducing the marked price of a transistor by Rs. 32, a shopkeeper makes a profit of 15%. If the cost price be Rs. 320, what percentage of profit would he have made if he had sold the transistor at the marked price?
10%
A person purchases 90 clocks and sells 40 clocks at a gain of 10% and 50 clocks at a gain of 20%. If he sold all of them at a uniform profit of 15%, then he would have got Rs. 40 less. The cost price of each clock is:
Rs. 50
Rs. 60
Rs. 80
Rs. 90
Hemant sold 10 sarees for a total profit of Rs. 460 and 12 sarees for a total profit of Rs. 144. At what profit per saree should he sell the remaining 20 sarees so that he gets an average profit of Rs. 18 per saree?
Rs. 7.40
Rs. 7.60
Rs. 7.80
Rs. 8
Marks obtained by Komal in English are equal to 1/3rd of marks obtained by her in Music. Total marks obtained by her in both the subjects is 160. How many marks did she secure in Music?
120
60
30
Rahim buys 3 kg mangoes for Rs 21 and sells them at 5 kg for Rs 50. To earn Rs 102 as profit, the mangoes to be sold by him should be
34 kg
52 kg
26 kg
32 kg
A team of 8 persons joins in a shooting competition. The best marksman scored 85 points. If he had scored 92 points, the average score for the team would have been 84. The number of points, the team scored was
588
645
665
672
Out of 9 persons, 8 persons spent Rs. 30 each for their meals. The ninth one spent Rs. 20 more than the average expenditure of all the nine. The total money spent by all of them was:
Rs. 290
Rs. 292.50
Rs. 400.50
A student was asked to find the arithmetic mean of the numbers 3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14 and x. He found the mean to be 12. What should be the number in place of x ?
3
7
17
31
The average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is Rs. 6250 and the average monthly income of P and R is Rs. 5200. The monthly income of P is:
3500
4000
4050
5000