Unitary Method problems
- 1. Cost of 7000 bricks is Rs. 5740. Cost of luggage to carry the bricks to the building place is Rs. 805. What is the cost at per thousand bricks?
Options- A. Rs. 900
- B. Rs. 800
- C. Rs. 935
- D. Rs. 750 Discuss
Correct Answer: Rs. 935
Explanation:
- 2. 5 dozen toys are packed in a box and 98 boxes are kept in a tempo. How many tempos can lift 29400 toys in one round?
Options- A. 4
- B. 5
- C. 7
- D. 6 Discuss
Correct Answer: 5
Explanation:
- 3.
approximate cost of 42 dozen of bananas?Cost of 1 dozen of bananas is Rs. 2·35, then what is the 4
Options- A. Rs. 430
- B. Rs. 540
- C. Rs. 380
- D. Rs. 400 Discuss
Correct Answer: Rs. 400
Explanation:
- 4. Cost of 1 chair is Rs. 214 and cost of one table is Rs. 937, then what is the approximate cost of 6 dozen chairs and 4 dozen tables?
Options- A. Rs. 60000
- B. Rs. 58000
- C. Rs. 55000
- D. Rs. 62000 Discuss
Correct Answer: Rs. 60000
Explanation:
Here , Cost of 1 chair = Rs. 214 and cost of one table = Rs. 937 .
? Cost of 6 dozen chairs = 6 × 12 × 214 = Rs. 15408
and cost of 4 dozen tables = 4 × 12 × 937 = Rs. 44976
? Total cost = 15408 + 44976
Total cost = Rs. 15408 + 44976 = Rs. 60384
Total cost of chairs and tables ? Rs. 60000 (Approximately)
- 5. 3 pumps, working 8 hours a day, can empty a tank in 2 days. How many hours a day should 4 pumps work in order to empty the tank in 1 day?
Options- A. 10
- B. 12
- C. 8
- D. 15 Discuss
Correct Answer: 12
Explanation:
3 pumps, can empty a tank in 2 days by working 8 hours a day.
1 pumps, can empty a tank in 2 days by working 8 x 3 hours a day.
1 pumps, can empty a tank in 1 days by working 8 x 3 x 2hours a day.
4 pumps, can empty a tank in 1 days by working 8 x 3 x 2 / 4 hours a day.
4 pumps, can empty a tank in 1 days by working 2 x 3 x 2 hours a day.
4 pumps, can empty a tank in 1 days by working 12 hours a day.
- 6. 39 persons can repair a road in 12 days, working 5 hours a day. In how many days will 30 persons, working 6 hours a day, complete the work?
Options- A. 9
- B. 14
- C. 12
- D. 13 Discuss
Correct Answer: 13
Explanation:
39 persons can repair a road by working 5 hours a day in 12 days.
1 persons can repair a road by working 5 hours a day in 12 x 39 days.
1 persons can repair a road by working 1 hours a day in 12 x 39 x 5 days.
30 persons can repair a road by working 1 hours a day in 12 x 39 x 5 / 30 days.
30 persons can repair a road by working 6 hours a day in 12 x 39 x 5 / 30 x 6 days.
30 persons can repair a road by working 6 hours a day in 2 x 39 x 5 / 30 days.
30 persons can repair a road by working 6 hours a day in 39 x 1 / 3 days.
30 persons can repair a road by working 6 hours a day in 13 days.
- 7. A contract is to be completed in 56 days if 104 persons work, each working at 8 hours a day. After 30 days, 25 % of the work is completed. How many additional persons should be deployed so that the work will be completed in the scheduled time, each person now working 9 hours a day.
Options- A. 60
- B. 58
- C. 12
- D. 56 Discuss
Correct Answer: 56
Explanation:
According to question ,
- 8. 'P' men working 'P' hours per day can do 'P' units of a work in 'P' days. How much work can be completed by 'Q' men working 'Q' hours per day in 'Q' days?
Options- A. P2Q2 units
- B. Q3/P2 units
- C. P2Q
- D. Q2P2 units Discuss
Correct Answer: Q3/P2 units
Explanation:
As we know from the given question,
P men working P hours per day in P days can do P units of a work.
1 men working P hours per day in P days can do P / P units of a work.
1 men working 1 hours per day in P days can do P /P x P units of a work.
1 men working 1 hours per day in 1 days can do P /P x P x P units of a work.
Q men working 1 hours per day in 1 days can do P x Q /P x P x P units of a work.
Q men working Q hours per day in 1 days can do P x Q x Q /P x P x P units of a work.
Q men working Q hours per day in Q days can do P x Q x Q x Q/P x P x P units of a work.
Q men working Q hours per day in Q days can do Q3/P2 units of a work.
- 9. 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 remaining meal?
Options- A. 56
- B. 45
- C. 30
- D. 27 Discuss
Correct Answer: 30
Explanation:
- 10. 10 men, working 6 hours a day can complete a work in 18 days. How many hours a day must 15 men work to complete the work in 12 days?
Options- A. 4
- B. 3
- C. 6
- D. 8 Discuss
Correct Answer: 6
Explanation:
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