Mathematics Question For RRB, Railway Group D, Rajasthan SI 07-07-2018

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Question(1) A and B alone can do one work in 12 days and 15 days respectively. A starts the work and after 6 days B also comes together to finish the work together. How many days did B really work on work?

A और B अकेले एक काम को क्रमशः 12 दिन और 15 दिन में कर सकते हैं | A काम शुरू करता है और 6 दिन बाद B भी काम को मिलकर समाप्त करने के लिए आ जाता है | काम पर B ने वस्तुतः कितने दिन काम किया ?

(A)56 दिन

(B)10/3 दिन

(C)23 दिन

(D)21 दिन

Question(2) Sonu can complete one task in 18 days, and Mahesh can complete the same work in Sonu half-time. How much of the two can work together in one day?

सोनू एक काम को 18 दिन में पूरा कर सकता है और महेश उसी काम को सोनू से आधे समय में पूरा कर सकता है | वे दोनों एक साथ मिलकर एक दिन में काम का कितना भाग पूरा कर सकते है ?

(A)1/6

(B)6

(C)3

(D)8

Question(3) Ajay and Hansraj can work together to complete one work in 30 days. They worked together for 20 days and after that Hansraj left the job. Ajay completed the remaining work in 20 days. Can Ajay complete that work alone?

अजय तथा हंसराज एक साथ मिलकर एक काम को 30 दिनों में पूरा कर सकते हैं | उन्होंने एक साथ 20 दिनों तक काम किया एवं उसके बाद हंसराज ने काम छोड़ दिया | अजय ने शेष बचे हुए काम को 20 दिनों में पूरा किया | अजय अकेले उस काम को पूरा कर सकता हैं ?

(A)23 दिन

(B)34 दिन

(C)26 दिन

(D)60 दिन

Question(4) Gansh and Ramnivas can complete any work in 3 days. They started working together. But after 2 days, Ram Niwas left the job. If in this way the remaining work has taken 2 days to complete, how many days can Ram Niwas alone complete that task?

गनेश तथा रामनिवास मिलकर किसी कार्य को 3 दिन में पूरा कर सकते है | उन्होंने मिलकर कार्य करना आरम्भ किया | किन्तु 2 दिन पश्चात् राम निवास ने काम छोड़ दिया | यदि इस प्रकार शेष कार्य को पूरा होने में 2 दिन का समय लगा हो तो राम निवास अकेले उस कार्य को कितने दिन में पूरा कर सकता है ?

(A)3 दिन

(B)2 दिन

(C)6 दिन

(D)8 दिन

Question(5) Both Manoj and Vikram together do any work in 12 days. Manoj alone can complete that work in 20 days. Now, if Vikram works only for half a day every day. So how can Manoj and Vikram together now do that work?

मनोज और विक्रम दोनों मिलकर किसी काम को 12 दिन में करते हैं | मनोज अकेला उस काम को 20 दिन में पूरा कर सकता है | अब यदि विक्रम प्रतिदिन केवल आधा दिवस ही काम करता है | तो मनोज और विक्रम मिलकर अब उस काम को कितने दिन में कर सकते हैं ?

(A)11 दिन

(B)15 दिन

(C)14 दिन

(D)13 दिन

All Solutions (1-5):

Que(1).Ans-(B)

Que(2).Ans-( A)

Que(3).Ans-(D)

Que(4).Ans-( C)

Que(5).Ans-(B)

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