Question
Person A and Person B can complete the work alone in 18
days and 24 days, respectively, and the efficiency of Person C is -----% greater than the efficiency of Person A. If Person B starts the work and after 3 days, Persons A and C join in, then the entire work is finished in ---- days. Which of the following options will fit into the blanks provided in the question? A) 10%, 6.4 days B) 15%, 5.2 days C) 20%, 8.3 daysSolution
Answer: D From (A): C = 100/110 * 18 = 180/11 (x + 3)/24 + x/18 + 11x/180 = 1 7.5x + 22.5 + 10x + 11x = 180 28.5x = 157.5 x = 5.5 Required time = 3 + 5.5 = 8.5 days This does not satisfy. From (B): C = 100/115 * 18 = 360/23 (x + 3)/24 + x/18 + 23x/360 = 1 15x + 45 + 20x + 23x = 360 x = 315/58 = 5(25/58) Required time = 3 + 5(25/58) days = 8(25/58) days This does not satisfy. From (C): C = 100/120 * 18 = 15 (x + 3)/24 + x/18 + x/15 = 1 7.5x + 22.5 + 10x + 12x = 180 x = 157.5/29.5 5.3 Required time = 3 + 5.3 = 8.3 days This satisfies.
Arrange the given words in the sequence in which they occur in the dictionary.
A) Depth
B) Dessert
C) Design
D) Desire
E) Deep
Arrange the given words in the sequence in which they occur in the dictionary.
1- Failure
2- Faith
3- Father
4- Funeral Â
5- Future
Arrange the given words in the sequence in which they occur in the dictionary.
(i) Occupancy
(ii) Occupational
(iii) Occupant<...
Which of the following sequence represents the correct dictionary order of the following words?
1. Marvel
2. March
3. Maroon
4. Market
5. Margin
Select the option that represents the correct order of the given words as they would appear in an English dictionary.
1- Name
2- Near
...Select the correct option that indicates the arrangement of the given words in the order in which they appear in an English dictionary. Â
1. Fac...
Arrange the given words in the sequence in which they occur in the dictionary:
1. Manual
2. Manifest
3. MeaningÂ
4. Meeting
5. Menu
Select the option that indicates the correct arrangement of the given words in the order they appear in an English dictionary:
1. Create
2...
Four words are given which of them will come at 2nd place when all of them are arranged alphabetically as in a dictionary?
Select the correct option that indicates the arrangement of the given words in the order in which they appear in an English dictionary.
1. In...
