BIHAR CGL MATHS QUIZ

Question 1:

20 persons were engaged to complete a work in 8 days. Due to COVID 19 infection, 4 persons left the job after 4 days. The total number of days required to complete the work is:

12

9

11

10

Question 2:

A takes 10 days more than B to finish a task. They both do the work together for 5 days and finish $\frac{8}{15}$ part of the work. How long will B alone take to complete the whole work?

किसी कार्य को पूरा करने में A को B से 10 दिन अधिक समय लगता है। उन्होंने 5 दिन तक साथ मिलकर कार्य किया और कार्य का $\frac{8}{15}$ भाग पूरा कर लिया। उस संपूर्ण कार्य को अकेले पूरा करने में B को कितना समय लगेगा?

15 days

16 days

14 days

12 days

Question 3:

5 men and 2 boys can do in 30 days as much work as 7 men and 10 boys can do in 15 days. How many boys should join 40 men to do the same work in 4 days?

10

15

12

14

Question 4:

A and B can do a work in 30 and 40 days respectively. They began the work together. A left the work after some days and B finished the remaining work in 5 days. After how many days did A leave?

15

20

12

16

Question 5:

If 25 men can complete a work in 36 hours, then in how many hours will 12 men complete the same work?

49

75

50

65

Question 6:

A and B can complete a work in 18 days and 10 days, respectively. They worked together for 5 days, after which B was replaced by C and the work was completed in the next 3 days. How long will C alone take to complete the entire work?

54 days

48 days

52 days

45 days

Question 7:

10 women can complete a work in 15 days. The same work can be completed in 5 days by 15 men. 10 women started the work and after 3 days, 5 men replaced 5 women. In how many days will the work be completed?

10

11

8

12

Question 8:

Seema works at a rate such that she can finish a work in $28 h$ , but she works at this rate for $7 h$ only. After that, she works at a rate such that she can finish the total work in $16 h$ . If Seema is to finish this work at a stretch, how many hours (total) will she take to finish this work?

सीमा इस दर से कार्य करती है कि वह किसी कार्य को $28$ घंटे में समाप्त कर सकती है, लेकिन वह इस दर से केवल $7$ घंटे तक ही कार्य करती है। इसके बाद, वह इस दर से कार्य करती है कि वह कुल कार्य $16$ घंटे में कर सकती है। यदि सीमा को एक कार्यवधि में ही वह कार्य पूरा करना है, तो उस कार्य को पूरा करने में उसे कुल कितने घंटे का समय लगेगा?

14

21

18

19

Question 9:

$X$ and $Y$ together can do a piece of work in 8 days. If $X$ alone can do the same work in 40 days, then in how many days will $Y$ do the work alone?

$X$ और $Y$ एक साथ मिलकर एक काम को 8 दिनों में पूरा कर सकते हैं। यदि अकेले $X$ उसी काम को 40 दिनों में पूरा कर सकता है, तो यदि $Y$ अकेले काम करे, तो वह उस काम को कितने दिनों में पूरा करेगा?

8

10

20

12

Question 10:

Mohan and Ramesh together can complete a work in 15 days. Mohan is 50% more efficient than Ramesh. Find the time taken by Mohan alone to complete the work.

मोहन और रमेश मिलकर एक कार्य को 15 दिनों में पूरा कर सकते हैं। मोहन, रमेश से $50 %$ अधिक कुशल है। अकेले मोहन द्वारा कार्य को पूरा करने में लिया गया समय ज्ञात करें।

20 days

22.5 days

32 days

25 days