Reasoning: 120/80 = 3/2
3/2 100 = 300/2 = 150 %
Ans: (A)
Question: What percent is 120 of 80?
Options:
(A) 150 %
(B) 134 1/3 %
(C) 135 1/3 %
(D) 140 1/3 %
(E) 143 1/3 %
Rationale: T = 60/36 * 18/5 = 6 sec
The answer: (D)
Question: In what time will a railway train 60 m long moving at the rate of 36 kmph pass a telegraph post on its way?
Options:
(A) 3
(B) 5
(C) 4
(D) 6
(E) 7
Reasoning: A = 2000(21/20)2 = 2205
Ans: (A)
Question: A money lender lends Rs.2000 for six months at 20% p.a. rate. It the interest is reckoned quarterly than find the amount given after time limit.
Options:
(A) 2205
(B) 3387
(C) 2882
(D) 2997
(E) 1278
Rationale: Average = (76 + 65 + 82 + 67 + 85)/5 = 375/5 = 75.
The answer: (E)
Question: Dacid obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, Mathematics, Physics, Chemistry and Biology. What are his average marks?
Options:
(A) 32
(B) 88
(C) 77
(D) 99
(E) 75
Reasoning: 12 is an even number while the others are od
Ans: (D)
Question: Find the odd man out 3, 5, 7, 12, 13, 17, 19
Options:
(A) 3
(B) 5
(C) 7
(D) 12
(E) 13
Reasoning: If students are A, B, C, D, E and F; we can have 6C3 groups in all. However, if we have to count groups in which a particular student (say A) is always selected we would get 5C2 = 10 ways of doing it.
Ans: (C)
Question: A teacher has to choose the maximum different groups of three students from a total of six students. Of these groups, in how many groups there will be included in a particular student?
Options:
(A) 6
(B) 8
(C) 10
(D) 12
(E) 15