M is 30% of Q, Q is 20% of P and N is 50% of P. What is M / N
Options:
(A) 3/28
(B) 3/27
(C) 3/21
(D) 3/22
(E) 3/25
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Take P = 100, then N = 50, Q = 20, M = 6. So M/N = 3/25 So the answer is: (E).
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Find the largest 2 digit number which is exactly divisible by 88?
Options:
(A) 88
(B) 89
(C) 99
(D) 54
(E) 90
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Largest 2 digit number is 99
After doing 99 88 we get remainder 11
Hence largest 2 digit number exactly divisible by 88 = 99 - 11 = 88 So the answer is: (A).
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A and B together can complete a work in 12 days. A alone can complete it in 20 days. If B does the work only for half a day daily, then in how many days A and B together will complete the work?
Options:
(A) 22
(B) 88
(C) 15
(D) 66
(E) 81
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B's 1 day work = (1/12 - 1/20) = 1/30
Now, (A + B)'s 1 day work = (1/20 + 1/60) = 1/15
So, A and B together will complete the work in 15 days. So the answer is: (C).
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