For income of Rs. 756, investment = Rs. 14976
For income of Rs. 21/4, investment = Rs. (14976/756 * 21/4) = Rs. 104
Therefore For a Rs. 100 stock, investment = Rs. 104
Hence market value = Rs. (104 - 1/4) = Rs. 103.75
In a class consisting of 100 students 20 know English and 20 do not know Hindi and 10 know neither English nor Hindi. The number of students knowing both Hindi and English is
Let A and B be the sets of students knowing English and Hindi respectively,
Then solve using set theory
n(A intersection B) = n(A) + n(B) - n(A U B) = 10
A shopkeeper buys a pen set of 10 pens in 95 rupees and sell them at a rate of 10 rupee per pen. If every set contains an additional pen of same quality then percentage profit obtained by the shopkeeper is?
Ram hears a sound of whistle after 2 sec. of whistling by Shyam and Shyam hears a sound of whistle after 3 sec. of whistling by Ram. If Ram and Shyam are in the line of flow of wind, then velocity of wind in m/s is
(Given that the speed of sound is 300 m/s)
OPtion
1) 80
2) 50
3) 40
4) 30
5) 60
6) 90
7) Wind is not blowing
8) Data are insufficient
9) 70
10) 20
Solution
Ram hears a sound of whistle after 2 sec. of whistling by Shyam and Shyam hears a sound of whistle after 3 sec.
(greater than 2 sec.) of whistling by Ram. These data indicate that wind is blowing from Shyam to Ram
According to first condition l = (300 + x) 2,
l represents distance between them
According to second condition l = (300 – x) 3
On solving these equations, we get x = 60
A man buys Rs.25 shares in a company which pays 9% dividend. The money invested by the person is that much as given 10% on investment. At what price did he buy the shares?
Face value of 1 share = Rs. 25
Dividend on 1 share = Rs. (9/100 * 25) = Rs. 9/4
Now Rs. 10 is an income on an investment of Rs. 100
Therefore Rs. 9/4 is an income on an investment of Rs. (100/10 * 9/4)
= Rs. 22.50
Hence, const of share = Rs. 22.50
If a square and a rhombus stand on the same base, then the ratio of the area of the square and the rhombus is
OPtion
1) Greater than 1
2) Equal to 1
3) Equal to 1/2
4) Equal to 1/3
5) Equal to 1/4
6) Less than 1
7) Equal to 1/5
8) Equal to 2/3
9) Equal to 3/4
10)None of these
Solution
Area of square = a^2 where a is base length
Area of rhombus with same base = a * h where h is perpendicular height. This height can be changed from a to 0 so definitely area on square will be more than area of rhombus.