Question
A group of workers, all equally efficient, were assigned to
complete a job in 16 days. However, 10 workers left the job at the end of each day. Despite this, the job was completed by the end of the 24th day. How many workers were there initially?Solution
Let total number of workers originally be ‘n’ and efficiency of each worker is 1 unit/day
So, total work = 16n units
So, 16n = n + (n – 10) + (n – 20) + ……. till 24 days
16n = 24/2 × [2n + (24 – 1) × (-10)]
16n = 12 × (2n – 230)
16n – 24n = -(12 × 230)
So, n = 345
Dwarfing rootstock of Pear is ____
In the presence of silica, lime and other salts in soil, the soil appears like __ ?
What is conservation agriculture?
Who developed the Training and Visit (T and V) system for agricultural extension services ?
Which cereal crop is most tolerant to saline and alkali soils
According to Planning commission, Indian region is divided into how many agro climatic zones?
Laggards contribute about how much % in innovation adaptation curve?
What is the end product of the nitrification process in the nitrogen cycle?
What nutrient deficiency leads to the development of the "Red leaf disorder" in cotton plants?
The presence of certain toxic compounds in seeds can lead to severe health issues if ingested. Which alkaloid, found in the seeds of Argemone mexicana, ...
Relevant for Exams:
