Elitmus
Exam
In a strange twist of hearts, P politicians of a country agreed to an average donation of Rs. D each. Q of these politicians, who had pledged an average of Rs. A never donated the pledged money. Which of the following expressions represents the percent of pledged money that was actually donated?
(a)100(PD/QA)
(b)100(QA/PD)
(c) 100-100(QA/PD)
(d) 100PD-100(QA/PD)
Read Solution (Total 2)
-
- Let the total money initially be 100
Money denoted by 1 politician of p type rs D
money denoted by p politicians of p type rs PD
Money denoted by 1 politician of q type rs A
Money denoted by q politicians of q type rs Q
Since QA denoted no money
and money is denoted by PD
So using the formula of ratio and proportion x(i-(y/x)^n
we get total amount of money denoted is 100(1-QA/PD)^n=100-100(QA/PD) - 11 years agoHelpfull: Yes(7) No(0)
- answer is c
- 11 years agoHelpfull: Yes(4) No(0)
Elitmus Other Question
The table below, Gives the marks of obtained by six students P,Q,R,S,T in five subjects A,B,C,D,E.
a, b, c, d, e denote the minimum marks scored in the A,B,C,D,E respectively
Max marks =100
A B C D E
P a+15 b+5 c d+4 e+1
Q a+14 b+8 c+5 d+2 e+2
R a+13 b+2 c+6 d+5 e
S a b+1 c+7 d+6 e+3
T a+8 b+4 c+3 d+3 e+6
U a+5 b c+9 d e+9
Also the following information is known
T scored equal marks in A and C
R scored one mark less in B than T scored in D
P scored 2 marks more in E then Q scored in B
The sum of of all the marks scored all the students in all subjects was 2600.
No one score less than 75 in any subject.
Questions:-
1)If U’s score in B was not less than P’s score in C, then how much did S score in E?
a)91 b)93 c)87 d)90
2)Referring to the previous question, who scored the max in which subject?
a)P,A b)Q,B c)U,E d)U,C
3)If P’s marks in A more than the marks anyone got in other subject, Then how much could T have scored In D?
a)64 b)83 c)82 d) 79
4)Which of the following cannot be R’s score in C?
a)94 b)90 c)93 d)96
when a certain number 'X' is multiplied by 18, the product 'y' has all digits as 4s. What is the minimum number of digits 'X' can have?
(a)8
(b)9
(c)12
(d)18