Chain Rule
Exam Duration: 45 Mins Total Questions : 30
The price of 357 mangoes is Rs.1517.25.What will be the approximate price of 9 dozens of such mangoes ?
- (a)
Rs.3000
- (b)
Rs.3500
- (c)
Rs.4000
- (d)
Rs.2500
On a scale of map,0.6 cm represents 6.6 cm .If the distance between the points on the map is 80.5 cm ,the actual distance between these points is :
- (a)
9 km
- (b)
72.5 km
- (c)
190.75 km
- (d)
885.5 km
An industrial loom weaves 0.128 metres of cloth every second.Approximately,how many seconds will it take for the loom to weave 25 metres of cloth?
- (a)
178
- (b)
195
- (c)
204
- (d)
488
36 men can complete a piece of work in 18 days.In how many days will 27 men complete the same work?
- (a)
12
- (b)
18
- (c)
22
- (d)
24
- (e)
None of these
A wheel that has 6 cogs is meshed with a larger wheel of 14 days.When the smaller wheel has made 21 revolutions ,then the number of revolutions made by the larger wheel is :
- (a)
4
- (b)
9
- (c)
12
- (d)
49
In a camp,there is a meal for 120 men or 200 children.If 150 children have taken the meal,how many men will be catered to with thew remaining meal?
- (a)
20
- (b)
30
- (c)
40
- (d)
50
4 mat-weavers can weave 4 mats in 4 days .At the same rate,how many mats would be woven by 8 mats-weavers in 8 days?
- (a)
4
- (b)
8
- (c)
12
- (d)
16
In a dairy farm,40 cows eat 40 bags of husk in 40 days.In how many days one cow will eat one bag of husk?
- (a)
1
- (b)
\(1\over40\)
- (c)
40
- (d)
80
12 men working 8 hours per day complete a piece of work in 10 days.To complete the same work in 8 days ,working 15 hours a day,the number of men required,is:
- (a)
4
- (b)
5
- (c)
6
- (d)
8
3 pumps,working 8 hours a day,cam empty a tank in 2 days. How many hours a day must 4 pumps work to empty tank in 1 day?
- (a)
9
- (b)
10
- (c)
11
- (d)
12
If 8 men can reap 80 hectares in 24 days,then how many hectares can 36 men reap in 30 days ?
- (a)
350
- (b)
400
- (c)
425
- (d)
450
A certain number of persons can dig a trench 100 m long,50 m broad and 10 m deep in 10 days .The same number of persons can dig another trench 20 m broad and 15 m deep in 30 days.The length of the second trench is :
- (a)
400 m
- (b)
500 m
- (c)
800 m
- (d)
900 m
If 5 men or 9 women can do a piece of work on 19 days,then in how many days will 3 men and 6 women do the same work ?
- (a)
12
- (b)
15
- (c)
18
- (d)
21
49 pumps can empty a reservoir in \(6 {1\over 2}\) days ,working 8 hours a days.If 196 pumps are used for 5 hours a day,then same work will be completed in:
- (a)
2 days
- (b)
\(2{1\over 2}\) days
- (c)
\(2{3\over5}\) days
- (d)
3 days
30 labourers, working 7 hours a day can finish a piece of work in 18 days.If the labourers work 6 hours a day ,then the number of labourers to finish the same piece of work in 30 days ,will be:
- (a)
15
- (b)
21
- (c)
22
- (d)
25
If 7 spider make 7 webs in 7 days ,then 1 spider will make 1 web in how many days?
- (a)
1
- (b)
\(7\over 2\)
- (c)
7
- (d)
49
If 18 pumps can raise 2170 tonnes of water in 10 days,working 7 hours a day; in how many days will 16 pumps raise 1736 tonnes of water,working 9 hours a day?
- (a)
6
- (b)
7
- (c)
8
- (d)
9
If 80 lamps can be lighted 5 hours per day for 30 days for Rs.21.25,then the number of lamps,which can be lighted 4 hours daily for 30 days ,for Rs.76.50, is :
- (a)
100
- (b)
120
- (c)
150
- (d)
160
If 12 carpenters,working 6 hours a day,can make 460 chairs in 24 days ,how many chairs will 18 carpenters make in 36 days ,each working 8 hours a day ?
- (a)
1260
- (b)
1320
- (c)
920
- (d)
1380
400 persons ,working 9 hours per day complete \(1\over4 \)th of the work in 10 days .The munber of additional persons,working 8 hours per day,required to complete the remaining work in 20 days,is:
- (a)
675
- (b)
275
- (c)
225
- (d)
250
If 9 examiners can examine a certain number of answer books in 12 days ,working 5 hours a day; for how many hours a day would 4 examiners have to work in order to examine twice the number of answer books in 30 days?
- (a)
6
- (b)
8
- (c)
9
- (d)
10
20 men complete one-third of a piece of work in 20 days .How many more men should be employed to finish the rest of the work in 25 more days?
- (a)
10
- (b)
12
- (c)
15
- (d)
20
If \(3\over5\) of a cistern is filled in 1 minute ,how many more time will be required to fill the rest of it?
- (a)
30 sec
- (b)
40 sec
- (c)
36 sec
- (d)
24 sec
If 5 enginees consume 6 metric tonnes of coal when each is running 9 hours a day,how many metric tonnes of coal will be needed ofr 8 engines, each running 10 hours a day, it being given that 3 engines of the former type consume as much as 4 engines of the latter type?
- (a)
\(3{1\over8}\)
- (b)
8
- (c)
\(8{8\over9}\)
- (d)
\(6{12\over25}\)
Some persons can do a piece of work in 12 days.Two times the number of such persons will do half of that work in:
- (a)
6 days
- (b)
4 days
- (c)
3 days
- (d)
12 days
A certain number of men can finish a piece of work in 100 days.If, there were 10 men less it would take 10 days more for the work to be finished.How many men were there originally?
- (a)
75
- (b)
82
- (c)
100
- (d)
110
15 men take 21 days of 8 hours each to do a piece of work .How many days of 6 hours each would 21 women take,if 3 women do as much work as 2 men?
- (a)
18
- (b)
20
- (c)
25
- (d)
30
A contractor undertook to do a certain piece of work in 9 days .He employed certain number of men,but 6 of them being absent from the very first day,the rest could finish the work in 15 days .The number of men originally employed were:
- (a)
12
- (b)
15
- (c)
18
- (d)
24
A contractor employed 30 men to do a piece of work in 38 days .After 25 days ,he employed 5 men more and the work was finished one day earlier.How many days he would have been behind,If he had employed additional men?
- (a)
1
- (b)
\(1{1\over4}\)
- (c)
\(1{3\over4}\)
- (d)
\(1{1\over2}\)
If 3 men or 6 boys can do a piece of work in 10 days ,working 7 hours a day ;how many days will it take complete a piece of work twice a large with 6 men and 12 boys working together for 8 hours a day?
- (a)
6
- (b)
\(7{1\over2}\)
- (c)
\(8{1\over2}\)
- (d)
9