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?
The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1 : 2 ?
A.
4
B.
8
C.
16
D.
None of these
Answer: Option B
Explanation:
Since the number is greater than the number obtained on reversing the digits, so the ten's digit is greater than the unit's digit.
Let ten's and unit's digits be 2x and x respectively.
The sum of the present ages of a father and his son is 60 years. Six years ago, father's age was five times the age of the son. After 6 years, son's age will be:
A.
12 years
B.
14 years
C.
18 years
D.
20 years
Answer: Option D
Explanation:
Let the present ages of son and father be x and (60 -x) years respectively.
Three candidates contested an election and received 1136, 7636 and 11628 votes respectively. What percentage of the total votes did the winning candidate get?
A.
57%
B.
60%
C.
65%
D.
90%
Answer: Option A
Explanation:
Total number of votes polled = (1136 + 7636 + 11628) = 20400.
In a certain store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant, approximately what percentage of the selling price is the profit?
A flagstaff 17.5 m high casts a shadow of length 40.25 m. The height of the building, which casts a shadow of length 28.75 m under similar conditions will be:
A.
10 m
B.
12.5 m
C.
17.5 m
D.
21.25 m
Answer: Option B
Explanation:
Let the height of the building x metres.
Less lengthy shadow, Less in the height (Direct Proportion)
40.25 : 28.75 :: 17.5 : x 40.25 x x = 28.75 x 17.5
Each of the questions given below consists of a question followed by three statements. You have to study the question and the statements and decide which of the statement(s) is/are necessary to answer the question.
9.
In how many days can 10 women finish a work?
I.
10 men can complete the work in 6 days.
II.
10 men and 10 women together can complete the work in 3
3
days
7
III.
If 10 men work for 3 days and thereafter 10 women replace them, the remaining work in completed in 4 days.
A.
Any two of the three
B.
I and II only
C.
II and III only
D.
I and III only
E.
None of these
Answer: Option A
Explanation:
I. (10 x 6) men can complete the work in 1 day.
1 man's 1 day's work =
1
60
II.
10 x
24
men +
10 x
24
women can complete the work in 1 day.
7
7
240
men's 1 day work +
240
women's 1 day work = 1.
7
7
240
x
1
+
240
women's 1 day's work = 1.
7
60
7
240
women's 1 day's work =
1 -
4
=
3
7
7
7
10 women's 1 day's work =
3
x
7
x 10
=
1
7
240
8
So, 10 women can finish the work in 8 days.
III. (10 men's work for 3 days) + (10 women's work for 4 days) = 1
(10 x 3) men's 1 day's work + (10 x 4) women's 1 day's work = 1
30 men's 1 day's work + 40 women's 1 day's work = 1
Each of these questions is followed by three statements. You have to study the question and all the three statements given to decide whether any information provided in the statement(s) is redundant and can be dispensed with while answering the given question.
10.
8 men and 14 women are working together in a field. After working for 3 days, 5 men and 8 women leave the work. How many more days will be required to complete the work?
I.
19 men and 12 women together can complete the work in 18 days.
II.
16 men can complete two-third of the work in 16 days.
III.
In 1 day, the work done by three men in equal to the work done by four women.
Each of the questions given below consists of a statement and / or a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statement(s) is / are sufficient to answer the given question. Read the both statements and
Give answer (A) if the data in Statement I alone are sufficient to answer the question, while the data in Statement II alone are not sufficient to answer the question.
Give answer (B) if the data in Statement II alone are sufficient to answer the question, while the data in Statement I alone are not sufficient to answer the question.
Give answer (C) if the data either in Statement I or in Statement II alone are sufficient to answer the question.
Give answer (D) if the data even in both Statements I and II together are not sufficient to answer the question.
Give answer(E) if the data in both Statements I and II together are necessary to answer the question.
12.
What is the capacity of a cylindrical tank?
I.
Radius of the base is half of its height which is 28 metres.
II.
Area of the base is 616 sq. metres and its height is 28 metres.
A.
I alone sufficient while II alone not sufficient to answer
B.
II alone sufficient while I alone not sufficient to answer
A box contains 2 white balls, 3 black balls and 4 red balls. In how many ways can 3 balls be drawn from the box, if at least one black ball is to be included in the draw?
A.
32
B.
48
C.
64
D.
96
E.
None of these
Answer: Option C
Explanation:
We may have(1 black and 2 non-black) or (2 black and 1 non-black) or (3 black).
If Rs. 10 be allowed as true discount on a bill of Rs. 110 due at the end of a certain time, then the discount allowed on the same sum due at the end of double the time is:
A.
Rs. 20
B.
Rs. 21.81
C.
Rs. 22
D.
Rs. 18.33
Answer: Option D
Explanation:
S.I. on Rs. (110 - 10) for a certain time = Rs. 10.
Loading Test...
9x = 36 
Required difference = (2x + x) - (2x - x) = 2x = 8.
% = 57%.
40.25 x x = 28.75 x 17.5
r2h, which can be obtained.