Question
A work can be completed by ‘A’ and ‘B’, alone in
15 days and 20 days, respectively. Find the number of days taken by ‘C’ to complete the same work alone if ‘A’, ‘B’ and ‘C’ together can complete the whole work in 4 days.Solution
Let total work = 60 units (LCM of 15 and 20) Efficiency of ‘A’ = (60/15) = 4 units/day Efficiency of ‘B’ = (60/20) = 3 units/day Combined efficiency of ‘A’, ‘B’ and ‘C’ = (60/4) = 15 units/day Efficiency of ‘C’ = 15 – (4 + 3) = 8 units/day Required time taken = (60/8) = 7.5 days
Highest area under conservation agriculture is in which of the Continent?
First interspecific cross was made by which of the following Scientist?
Deendayal Antyodaya yojana - DAY NRLM envisages sanction of cash credit to each eligible self-help group for a period of 3 years with a yearly drawing p...
A type of cropping in which the two crops, morphologically different grown on same field are grown together and they complement each other __
Which fruit crop is suitable for arid regions?
Which pathogen is responsible for causing Tea Rust disease?
Which colour of the tag is used for foundation stage seed?
What does 'NREGP' stand for?
Marine Products Export Development Authority has how many quality control laboratories?
Indian institute of millet research, to be supported as the centre of excellence for ‘shree anna’ located in_____
Relevant for Exams:
