A has 20% more money than B and C has 20% less money than B. What percent more money does A have than C?
30
50
17
43
Rani, who is y yr old at present, is x yr older than Hamid. 15 yr ago, Hamid's age was of the age of Rani. Which of the following is true?
3y-4x= 45
2y-x= 15
-15=
3x-4y= 45
Cost price of 20 articles is equal to selling price of x articles. If the profit is 25%, then the value of x is
15
16
18
25
The value of a machine depreciates at the rate of 10% per year. It was purchased 3 yr ago. If its present value is 145800 for how much was it purchased?
175800
180000
200000
210000
The base of an isosceles ABC is 48 cm and its area is 168 cm. The length of one of its equal sides is
8 cm
15cm
17cm
25 cm
The area of a square is of the area of a circle. The ratio of the side of the square to the diameter of the circle is
3:1
2:1
n:1
:1
The sum of all interior angles of a polygon is 1440°. The number of sides of the polygon is
8
10
9
12
If a, b and c are respectively the number of faces, edges, and vertices of a pentagonal pyramid, then the value of is
-1.5
2
1.75
-1
If one angle of a triangle is 130°, then the angle between the bisectors of the other two angles is
65°
115°
130°
155°
Four times the area of the curved surface of a cylinder is equal to 6 times the sum of the areas of its bases. If its height is 12 cm, then its volume (in cm3) is
48
546
768
D.
768
Curved surface area of a cylinder = 2rh
Area of the base =
Area of both base = 2
According to question,
4 x 2r x 12 = 6 x 2 x r x r
r = 8
Volume of a cylinder =
= x 8 x 8 x 12
=768cm3