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- 11. A and B finish the job in 15 days.while A,B and C can finish it in 10 days . C alone will finish the job in
A.40 days
B.30 days
C.60 days
D.70 days
Answer & Explanation
Answer: Option B 
10 = (15 * x)/(15 + x)
150+10x=15x
5x=150
X=30
View Answer
- 12. If 32 men and 24 days can reap a field in 9 days in how many days will 28 men and 12 boys reap it supposing that 4 men can do as much as 6 boys?
A.20 days
B.30 days
C.12 days
D.24 days
Answer & Explanation
Answer: Option C
(32m+24b)9=(28m+12b)x
[Since 24b(6 * 4)b
=> 6 boys = 4 men
=> 24 boys = 16 men]
(32m+16m)9=(28m+8m)x
[since 4 men = 6 boys]
48m*9/36m = 12 days
View Answer
- 13. A certain number of men can do a work in 40 days . If there were 5 men less it could be finished in 10 days more . How many men are there?
A.15 men
B.25 men
C.18 men
D.12 men
Answer & Explanation
Answer: Option B
x*40 =(x-5)*50
5x-4x =25
X=25 men
View Answer
- 14. There is a sufficient food for 200 men for 20 days after 15 days 100 men leave the place. For how many days will the rest of the food last for the rest of the men?
A.10 days
B.5 days
C.15 days
D.12 days
Answer & Explanation
Answer: Option A
After 13 days , 100 men left,
Therefore 5 days*200 men =x days*100men
X = 10 days
View Answer
- 15. If A can complete a work in 36 days and B can do the same work in 42days. If A after doing 6 days, leaves the work, find in how many days B will do the remaining work ?
A.35 days
B.15 days
C.30 days
D.25 days
Answer & Explanation
Answer: Option A
A’s one day work =1/36
6 day work = 6*1/36 = 1/6
Remaining work = 1-1/6=5/6
B completes the work in 5/6*42 = 35 days
View Answer
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