Question
Some Category of workers can complete a decided project
in 20 days. However, due to some unpredicted situation, 5 workers were absent. That’s why, the project got detained by 5 days. If each worker does the similar amount of work and all workers are equally efficient, then how many workers were initially allocated to the project?Solution
Let's we consider that the number of workers initially allocated to the project is 'a'. In one day, 'a' workers can complete 1/20th of the project. Then, due to unpredicted situation there will absence of 5 workers, the effective number of workers working on the project is (a - 5). Since the project got detained by 5 days, the entire number of days taken to complete the project is 20 + 5 = 25. Therefore, we can set up the equation to solve for 'a': (a- 5) x 25 = a x 20 25a - 125 = 20a 25a – 20a = 125 5a = 125 a = 125 / 5 a = 25 Therefore, the initial number of workers allocated to the project is 25.
David is ranked 15th from the top in his class. When counted from the bottom, he is ranked 126th. What is the total number of students in the class?
In a code language, 'PYRAMID' is written as 98, 'TOMB' is written as 50. How is 'RUINS' written in the same code language?
In a certain code language, "ACTION" is written as "MLRGXZ", and "TRAVEL" is written as "OVEZIG". How will "DESIGN" be written in that language?
Answer the following questions based on the information given below.
Seven persons T, U, V, W, X, Y and Z has different weights. T is heavier t...
(1) Punishment   Â
(2) Arrest      Â
(3) Crime      Â
(4) Judgment
...Among seven students D, E, F, G, H, I and J. I is heavier than J but lighter than G. F is heavier than E. D is the heaviest. E is fourth heaviest. H is ...
Who among the following person lives three floors above E?
Six persons S, T, U, V, W and X have different weights in kg. T is heavier than U but lighter than S, who is the second heaviest among all. W is lighter...
Among Jyoti, Kaya, Lovely, Mahesh and Nalini each of them is different height.
Mahesh’s height is more than only three persons. Kaya’s height...
There are 38 persons in a row, in which A is 8th from the left and B is 12nd from the right side of the row. Find out no of people between A and B.