A shopkeeper gives two successive discounts of 7% each on marked price of ₹ 20,000/- of an article. The selling price of the article is
₹ 19,278
₹ 18,927
₹ 17,298
D.
₹ 17,298
Required selling price:
If x + y = 1 + xy, then x^{3} + y^{3} - x^{3}y^{3} is equal to
0
1
-1
2
B.
1
Put the value of x and y = 1
as it satisfies the equation
x + y = 1 + xy
1 + 1 = 1+ 1.1
2 = 2
∴ x^{3} + y^{3} - x^{3}y^{3} = (1)^{3} + (1)^{3} - (1)^{3}(1)^{3} = 2 - 1 = 1
If 35 men finish a piece of work in 8 days, then the number of men who can do the same work in 10 days is
38
28
19
17
B.
28
M_{1}D_{1} = M_{2}D_{2}35 x 8 = M_{2} x 10
M_{2} = 28
In 2001, the price of a building was 80% of its original price. In 2002, the price was 60% of its original price. By what percent did the price decrease?
15%
20%
25%
30%
C.
25%
Let the original price be ₹ x
Price of building in 2001:
Price of building in 2002:
∴ Required percentage
If then the value of a^{3} + b^{3} - 2 is
0
-2
-1
2
B.
-2
The present ages of A and B are in the ratio 3 : 4. Ten years ago, this ratio was 4 : 7. The present age of A and B are respectively:
18 years, 24 years
21 years, 28 years
24 years, 32 years
27 years, 36 years
A.
18 years, 24 years
Let present age of A = 3x
And present age of B = 4x
According to the question,
∴ Present age of A = 3x = 3 x 6 = 18 years
Present age of B = 4x = 4 x 6 = 24 years
Sound travels 330 m in a second. When the sound follows the flash of lightning after 10 sec, the thunder cloud will be at a distance of
1300 m
2000 m
3650 m
3300 m
D.
3300 m
Sapna purchased a cycle for ₹ 1,000/- and sold it for ₹ 1,200/-. Her gain in percentage is
20%
10%
12%
40%
A.
20%
Gain = 1200 - 1000 = 200
The amount to be paid, when principal = ₹ 2,000/-, Rate of simple interest (R) = 5%, T = 2 years, is
C.
₹ 2,200/-100 S.I. = PRT
100 x S.I. = ₹ 2,000 x 5 x 2
S.I. = ₹ 200/-
Required amount = Principal + Interest
= 2000 + 200 = ₹ 2200/-
The perimeter of two similar triangles ΔABC and ΔPQR are 60 cm and 36 cm respectively. If PQ = 18 cm, then AB is
20 cm
24 cm
36 cm
30 cm
D.
30 cm
Severity: Notice
Message: Undefined variable: flex_subject_id
Filename: features/flexipad.php
Line Number: 348
Backtrace:
File: /var/www/html/public_html/application/views/features/flexipad.php
Line: 348
Function: _error_handler
File: /var/www/html/public_html/application/views/previous_year_papers/paper.php
Line: 163
Function: view
File: /var/www/html/public_html/application/controllers/Study.php
Line: 2109
Function: view
File: /var/www/html/public_html/index.php
Line: 315
Function: require_once