12 water pumps can make a water tank empty in 20 minutes. But 2 pumps are out of order. How long will the remaining pumps take to make the tank empty...? Mcqs

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12 water pumps can make a water tank empty in 20 minutes. But 2 pumps are out of order. How long will the remaining pumps take to make the tank empty...?

(A) 20 minutes
(B) 24 minutes

(C) 28 minutes
(D) None of these

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If a + b + c = 0 then value of [ a + b / c +b+c/a + c + a / b ][ a / b + c + b / c + a + c / a + b] is:...?

(A) 8
(B) -3

(C) 9
(D) 0

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15 men were hired to plough a piece of land in 10 days. How many more men will be required to do the same job in 3 days?...?

(A) 35
(B) 40

(C) 50
(D) None of these

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Three hundredths is the same as...?

(A) 033
(B) 300 0

(C) 3.00
(D) 0.03

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If two times A is equal to three times of B and also equal to four times of C, then A: B: C is...?

(A) 2:3:4
(B) 3:4:2

(C) 4:6:3
(D) 6:4:3

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BY converting 75% into fraction the answer will be...?

(A) 3/4
(B) 2/3

(C) 1/3
(D) 1/4

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The sum of the reciprocals of A's ages [in years] 2 years ago and 2 years from now is 2/3 , The present age of A is...?

(A) 2 years
(B) 7 years

(C) 4 years
(D) 5 years

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A takes 6 days less than the time taken by B to finish a piece of work. If both A and B together can finish it in 4 days, find the time taken by B to finish the work...?

(A) 10 days
(B) 12 days

(C) 14 days
(D) 16 days

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What is the arithmetic mean (average) of 2, 4, 6, 8, 10 and 12..?

(A) 5
(B) 6

(C) 7
(D) 8

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If the mean of 7 terms is 40, the sum of those terms will be...?

(A) 280
(B) 480

(C) 200
(D) 346

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