Mathematics Question For Railway Group D,RPF, Rajasthan SI 04-10-2018

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Question(1) A and B together can do one thing in 6 days. The same work can be done in B and C, 9 days and A and C in 12 days. According to A, B and C, how many days can it be done together?

  A और B मिलकर एक काम को 6 दिनों में एक सकते हैं| उसी काम को B और C,9 दिनों में तथा A और C , 12 दिनों में कर सकते है | तदनुसार A,B और C एक साथ उसे कितने दिनों में कर सकते है ?

(A) 59/53

(B)45/73

(C)72/13

(D) 33/54

Question(2) A completes 1/3 of the work in 5 days and B completes 2/5 of the same work in 10 days. In how many days will A and B meet that work?

  A किसी कार्य का 1/3 भाग 5 दिन में तथा B उसी कार्य का 2/5 भाग 10 दिन में पूरा करता है | दोनों A तथा B मिलकर उस कार्य को कितने दिन में पूरा करेंगे ?

(A)98/7

(B) 67/3

(C) 79/3

(D)75/8

Question(3) 7 men can complete any work within 12 days. How many extra men will be required to complete double work in 8 days?

  7 आदमी किसी कार्य को 12 दिन में पूरा कर सकते है | उससे दुगुने कार्य को 8 दिन में पूरा करने के लिए कितने अतिरिक्त आदमियों की आवश्यकता होगी ?

(A)14

(B)22

(C)11

(D)26

Question(4) A can do a work in 9 days. If B is 50% more efficient than A, then how long can B do that work?

  A एक काम को 9 दिन में कर सकता हैं | यदि A की अपेक्षा B,50% अधिक कुशल है तो B उस काम को कितने दिन में कर सकता है ?

(A)7

(B)6

(C)9

(D)11

Question(5) A is three times better than a B, and therefore it can do any work in less than 40 days compared to B. How often can they do the same work together?

 A , B की तुलना में तीन गुना बेहतर कामगार है और इसलिए यह कोई कार्य B की तुलना में उससे 40 दिन कम अवधि में कर सकता है | तब दोनों मिलकर वही कार्य कितने दिनों में कर सकते हैं ?

(A)19

(B)37

(C)15

(D)13

All Solutions (1-5):

Que(1).Ans-(C)

Que(2).Ans-(D)

Que(3).Ans-(A)

Que(4).Ans-(B)

Que(5).Ans-(C)

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