# DI Questions for RRB PO/Clerk Mains 2018: 11 September

## DI Questions for RRB PO/Clerk Mains 2018: 11 September

Directions (1-5): Study the following table carefully to answer the questions that follow:
The table shows the number of books sold by 6 stores in 5 different months.
1. If the total number of books sold by store O is 4395, then what is the ratio of books sold by O, P and Q in July to the number of books sold by M, N and R together in August?
1) 103 : 104
2) 99 : 101
3) 101 : 102
4) 99 : 103
5) 101 : 103
2. If the ratio of the number of books sold by M in May to the number of books sold by N in June is 2 : 3 and the total number of books sold by N is 20% more than that sold by M, then the number of books sold by M in May is what per cent of the total number of books sold by M?
1) 49%
2) 33%
3) 39%
4) 27%
5) 43%
3. If the number of books sold in August by store P is 10% more than that in the previous month and the number of books sold in May by store Q is 5% less than that in the previous month, then what is the difference between the number of books sold by all the stores in August and the number of books sold by Q in all the months?
1) 1437
2) 1307
3) 1380
4) 1374
5) 1743
4. If the number of books sold by R in April is 18% more than that sold by M in April, then what is the average number of books sold by R in the given five months?
1) 865
2) 850
3) 825
4) 890
5) 807
5. If 950 books are sold in July by store O and 750 books are sold in August by store P then the total number of books sold in August is how much less than the number of books sold in July?
1) 250
2) 105
3) 100
4) 220
5) None of these
Directions (6-10): Study the following data given below and answer the following questions.
The pie-charts show the distance covered by a boat moving upstream and downstream on different days of a week and the table shows the speed of the stream in km/hr on the different days of the week.
Total distance covered upstream = 1500 km

Total distance covered downstream = 1200 km
6. If the time taken by the boat to travel upstream on Tuesday is 10.5 hrs more than the time taken by it to travel downstream on the same day, then find the speed of the boat in still water on Tuesday.
1) 15 kmph
2) 12 kmph
3) 13 kmph
4) 16.5 kmph
5) None of these
7. If the time taken by the boat to travel upstream on Sunday is equal to the time taken by it to travel downstream on Monday and the speed of boat in still water on Monday is 16.8 kmph then find the speed of the boat in still water on Sunday.
1) 16 kmph
2) 18 kmph
3) 17 kmph
4) 15.4 kmph
5) 21 kmph
8. If the time taken by the boat to travel upstream on Wednesday is 3/2 hours more than the time taken by it to travel downstream on Thursday and the speed of the boat in still water on Thursday is 14 kmph, then find the upstream speed of the boat on Wednesday.
1) 14 1/3 kmph
2) 16 1/3 kmph
3) 17 2/3 kmph
4) 18 2/3 kmph
5) None of these
9. If the time taken by the boat to travel downstream on Sunday is 16 hours and that on Monday is 21 7/8% more than that on Sunday and the time taken to travel downstream on Thursday is 1/2 hours more than that on Sunday, then what is the average speed of the boat on Sunday, Monday and Thursday?
1) 10.6 kmph
2) 12.5 kmph
3) 11.6 kmph
4) 14 kmph
5) 13 kmph
10. If the distance covered by the boat to travel upstream on Friday is 10% less than that on Thursday and the distance covered by the boat downstream on Friday is 10% more that on Thursday. The speed of the stream on Friday is 50% more than that on Monday. The speed of the boat on Friday is 18 kmph. Find the time taken by the boat to travel upstream and downstream on Friday.
1) 32.5 hours
2) 24.6 hours
3) 22.3 hours
4) 34.6 hours
5) None of these
1. 3
2. 2
3. 4
4. 5
5. 3
6. 1
7. 3
8. 1
9. 5
10. 4