Ques: Two persons A and B can complete a piece of work in 30 days and 45 days respectively. If they work together, what part of the work will be completed in 3 days?
Options:
(A) 1/8
(B) 1/3
(C) 1/6
(D) 1/2
(E) 5/3
Ans: (C)
CoT: A's one day's work = 1/30
B's one day's work = 1/45
(A + B)'s one day's work = 1/30 + 1/45 = 1/18
The part of the work completed in 3 days = 3 (1/18) = 1/6.

Ques: What is theleast number should be added to 1056, so the sum of the number is completely divisible by 23?
Options:
(A) 1
(B) 2
(C) 3
(D) 5
(E) 6
Ans: (B)
CoT: (1056 / 23) gives remainder 21
21 + 2 = 23, So we need to add 2

Ques: A no.when divided by 225 gives a remainder 43, what remainder will beobtained by dividingthe same no.17?
Options:
(A) 2
(B) 7
(C) 9
(D) 11
(E) 13
Ans: (E)
CoT: 225 + 43 = 268/17 = 13 (Remainder)

Ques: Find the simple interest on Rs.350 for 10 months at 5 paisa per month?
Options:
(A) 277
(B) 175
(C) 288
(D) 266
(E) 121
Ans: (B)
CoT: I = (350*10*5)/100 = 175