Rationale: 400*(90/100)*(95/100) = 342
The answer: (C)
Question: The sale price sarees listed for Rs.400 after successive discount is 10% and 5% is?
Options:
(A) 228
(B) 277
(C) 342
(D) 291
(E) 112
Reasoning: P = (P*3*R)/100
R = 33 1/3%
Ans: (B)
Question: In what time a sum of money double itself at 3% per annum simple interest?
Options:
(A) 33 1/8%
(B) 33 1/3%
(C) 33 3/3%
(D) 33 1/7%
(E) 32 1/3%
Rationale: 23m - n = p
Add n to both sides:
23m = n + p
Add m to both sides:
24m = n + p + m
Now, divide both sides by 3
8m = (n + p + m)/3 = the average of n, p, and m
The answer: (E)
Question: If 23m n = p, then which of the following represents the average (arithmetic mean) of m, n, and p, in terms of m?
Options:
(A) 2m 1
(B) 4m
(C) 6m
(D) m/5
(E) 8m
Reasoning: Let Corn profit = 3x
Wheat profit = x
Truffle Profit = 4/5 * 3x = 12/5 * x
Wheat Profit / Truffle Profit = x / [12/5 * x] = 5/12
Ans: (A)
Question: A certain bushel of wheat generates one-third the profit of a bushel of corn. If a bushel of corn generates five-fourths the profit of a bushel of truffles, what fraction of the profit from a bushel of wheat is the profit from a bushel of truffles?
Options:
(A) 5/12
(B) 4/5
(C) 5/4
(D) 5/3
(E) 12/5
Rationale: D = 500 + 230 = 730
S = 44 * 5/18 = 12 mps
T = 730/12 = 61 sec
The answer: (D)
Question: A train 500 meters long is running with a speed of 44 kmph. The time taken by it to cross a tunnel 230 meters long is?
Options:
(A) 287 sec
(B) 288 sec
(C) 48 sec
(D) 61 sec
(E) 17 sec
Rationale: P = (P*40*R)/100
R = 2 1/2%
The answer: (B)
Question: At what rate percent on simple interest will a sum of money double itself in 40 years?
Options:
(A) 3 1/3%
(B) 2 1/2%
(C) 3 9/3%
(D) 3 2/3%
(E) 3 6/3%