871.
The average salary of a group of 12 employees in an institution is ₹3,950 per month and that of another group of employees
is ₹1,850. If the average salary of all employees is ₹2,150, then the total number of employees is:
(A)
100
(B)
88
(C)
84
(D)
72
872.
Study the given bar-graph and answer the question that follows.
The bar-graph represents the number of boys and girls in different sections of class 12.
The average number of girls in each section is:
(A)
42
(B)
43
(C)
37
(D)
40
873.
PQ and RS are two chords of a circle such that PQ = 12 cm and RS = 20 cm and PQ is parallel to RS. If the distance between
PQ and RS is 4 cm, find the diameter of the circle.
(A)
(B)
(C)
(D)
874.
If Ramu’s salary is 30% less than Somu’s salary, then by how much percent is Somu’s salary more than Ramu’s salary?
(A)
(B)
(C)
(D)
875.
What is the value of the following expression?
(A)
(B)
(C)
(D)
876.
Two cubes have their volumes in the ratio 1 : 125. Find the ratio of their surface areas.
(A)
1 : 125
(B)
1 : 25
(C)
25 : 1
(D)
1 : 5
877.
△XYZ is similar to △PQR. If the ratio of the perimeter of △XYZ to the perimeter of △PQR is 16 : 9 and PQ = 3.6 cm, then
what is the length (in cm) of XY?
(A)
(B)
(C)
(D)
878.
The total income of three families is ₹72,000. Their expenditures are 80%, 85% and 75%, respectively. If the savings are in
the ratio 8 : 9 : 20, then the income of the second family is:
(A)
₹32,000
(B)
₹16,000
(C)
₹40,000
(D)
₹24,000
879.
A closed cylindrical tank of radius 1.5 m and height 3 m is made from a sheet of metal, how much sheet of metal is required
to do it?
(A)
42.24 square metre
(B)
24.42 square metre
(C)
42.42 square metre
(D)
24.24 square metre
880.
If a sum of ₹3,260 on simple interest amounts to ₹5,420 in 6 years, then what will this sum amount to in 4 years at the same
rate of interest?
